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Indus Valley Civilisation
Indus Valley Civilisation
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Indus Valley Civilisation
IVC major sites
Alternative namesHarappan civilisation
ancient Indus
Indus civilisation
Geographical rangeBasins of the Indus river, Pakistan and the seasonal Ghaggar-Hakra river, northwestern India and eastern Pakistan
PeriodBronze Age South Asia
Datesc.3300 – c.1300 BCE
Type siteHarappa
Major sitesHarappa, Mohenjo-daro, Ganweriwala, Dholavira, and Rakhigarhi
Preceded byMehrgarh
Followed byCemetery H culture
Black and red ware
Ochre Coloured Pottery culture
Painted Grey Ware culture
Ruins of Mohenjo-daro on the Indus River in Pakistan, the first South Asian UNESCO World Heritage Site; the Great Bath is in the foreground.
Miniature votive images or toys from Harappa, c. 2500 BCE, clay figurines of zebu oxen, a cart, and a chicken.

The Indus Valley Civilisation[1] (IVC), also known as the Indus Civilisation, was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE, and in its mature form from 2600 BCE to 1900 BCE.[2][a] Together with ancient Egypt and Mesopotamia, it was one of three early civilisations of the Near East and South Asia. Of the three, it was the most widespread: it spanned much of Pakistan; northwestern India; and northeast Afghanistan.[3][b] The civilisation flourished both in the alluvial plain of the Indus River, which flows through the length of Pakistan, and along a system of perennial monsoon-fed rivers that once coursed in the vicinity of the Ghaggar-Hakra, a seasonal river in northwest India and eastern Pakistan.[2][4]

The term Harappan is also applied to the Indus Civilisation, after its type site Harappa, the first to be excavated early in the 20th century in what was then the Punjab province of British India and is now Punjab, Pakistan.[5][c] The discovery of Harappa and soon afterwards Mohenjo-daro was the culmination of work that had begun after the founding of the Archaeological Survey of India in the British Raj in 1861.[6] There were earlier and later cultures called Early Harappan and Late Harappan in the same area. The early Harappan cultures were populated from Neolithic cultures, the earliest and best-known of which is named after Mehrgarh, in Balochistan, Pakistan.[7][8] Harappan civilisation is sometimes called Mature Harappan to distinguish it from the earlier cultures.

The cities of the ancient Indus were noted for their urban planning, baked brick houses, elaborate drainage systems, water supply systems, clusters of large non-residential buildings, and techniques of handicraft and metallurgy.[d] Mohenjo-daro and Harappa very likely grew to contain between 30,000 and 60,000 individuals,[10] and the civilisation may have contained between one and five million individuals during its florescence.[11] A gradual drying of the region during the 3rd millennium BCE may have been the initial stimulus for its urbanisation. Eventually it also reduced the water supply enough to cause the civilisation's demise and to disperse its population to the east.[e]

Although over a thousand Mature Harappan sites have been reported and nearly a hundred excavated,[f] there are only five major urban centres:[12][g] Mohenjo-daro in the lower Indus Valley (declared a UNESCO World Heritage Site in 1980 as "Archaeological Ruins at Moenjodaro"), Harappa in the western Punjab region, Ganeriwala in the Cholistan Desert, Dholavira in western Gujarat (declared a UNESCO World Heritage Site in 2021 as "Dholavira: A Harappan City"), and Rakhigarhi in Haryana.[13][h] The Harappan language is not directly attested, and its affiliations are uncertain, as the Indus script has remained undeciphered.[14] A relationship with the Dravidian or Elamo-Dravidian language family is favoured by a section of scholars.[15][16]

Etymology

[edit]

The Indus civilisation is named after the Indus River system in whose alluvial plains the early sites of the civilisation were identified and excavated.[17][i]

Following a tradition in archaeology, the civilisation is sometimes referred to as the Harappan, after its type site, Harappa, the first site to be excavated in the 1920s; this is notably true of usage employed by the Archaeological Survey of India after India's independence in 1947.[18][j]

The term "Ghaggar-Hakra" figures prominently in modern labels applied to the Indus civilisation on account of a good number of sites having been found along the Ghaggar-Hakra River in northwest India and eastern Pakistan.[19] The terms "Indus-Sarasvati Civilisation" and "Sindhu-Saraswati Civilisation" have also been employed in the literature by supporters of Indigenous Aryanism, after a posited identification of the Ghaggar-Hakra with the river Sarasvati described in the early chapters of the Rigveda, a collection of hymns in archaic Sanskrit composed in the second-millennium BCE,[20][21] which are unrelated to the mature phase of the Indus Valley Civilization.

Recent geophysical research suggests that, unlike the Sarasvati described in the Rigveda as a snow-fed river the Ghaggar-Hakra was a system of perennial monsoon-fed rivers, which became seasonal around the time the civilisation diminished, approximately 4,000 years ago.[4][k]

Extent

[edit]
Major sites and extent of the Indus Valley Civilisation

The Indus Valley Civilisation was roughly contemporary with the other riverine civilisations of the ancient world: Ancient Egypt along the Nile, Mesopotamia in the lands watered by the Euphrates and the Tigris, and China in the drainage basin of the Yellow River and the Yangtze. By the time of its mature phase, the civilisation had spread over an area larger than the others, which included a core of 1,500 kilometres (900 mi) up the alluvial plain of the Indus and its tributaries. In addition, there was a region with disparate flora, fauna, and habitats, up to ten times as large, which had been shaped culturally and economically by the Indus.[22][l]

Around 6500 BCE, agriculture emerged in Balochistan, on the margins of the Indus alluvium.[23][m][24][n] In the following millennia, settled life made inroads into the Indus plains, setting the stage for the growth of rural and urban settlements.[25][o] The more organised sedentary life, in turn, led to a net increase in the birth rate.[23][p] The large urban centres of Mohenjo-daro and Harappa very likely grew to containing between 30,000 and 60,000 individuals, and during the civilisation's florescence, the population of the subcontinent grew to between 4–6 million people.[23][q] During this period the death rate increased, as the close living conditions of humans and domesticated animals led to an increase in contagious diseases.[24][r] According to one estimate, the population of the Indus civilisation at its peak may have been between one and five million.[26][s]

During its height the civilisation extended from Balochistan in the west to western Uttar Pradesh in the east, from northeastern Afghanistan in the north to Gujarat state in the south.[20] The largest number of sites are in the Punjab region, Gujarat, Haryana, Rajasthan, Uttar Pradesh, Jammu and Kashmir states,[20] Sindh, and Balochistan.[20] Coastal settlements extended from Sutkagan Dor[27] in Western Baluchistan to Lothal[28] in Gujarat. An Indus Valley site has been found on the Oxus River at Shortugai in Afghanistan which is the northernmost site of the Indus Valley Civilisation,[29] in the Gomal River valley in northwestern Pakistan,[30] at Manda, Jammu on the Beas River near Jammu,[31] and at Alamgirpur on the Hindon River, only 28 km (17 mi) from Delhi.[32] The southernmost site of the Indus Valley Civilisation is Daimabad in Maharashtra. Indus Valley sites have been found most often on rivers, but also on the ancient seacoast,[33] for example, Balakot (Kot Bala),[34] and on islands, for example, Dholavira.[35]

Discovery and history of excavation

[edit]
Alexander Cunningham, the first director general of the Archaeological Survey of India (ASI), interpreted a Harappan stamp seal in 1875.
R. D. Banerji, an officer of the ASI, visited Mohenjo-daro in 1919–1920, and again in 1922–1923, postulating the site's far-off antiquity.
John Marshall, the director-general of the ASI from 1902 to 1928, who oversaw the excavations in Harappa and Mohenjo-daro, shown in a 1906 photograph

"Three other scholars whose names I cannot pass over in silence, are the late Mr. R. D. Banerji, to whom belongs the credit of having discovered, if not Mohenjo-daro itself, at any rate its high antiquity, and his immediate successors in the task of excavation, Messrs. M.S. Vats and K.N. Dikshit. ... no one probably except myself can fully appreciate the difficulties and hardships which they had to face in the three first seasons at Mohenjo-daro."

 — From, John Marshall (ed), Mohenjo-daro and the Indus Civilization, London: Arthur Probsthain, 1931.[36]

The first modern accounts of the ruins of the Indus civilisation are those of Charles Masson, a deserter from the East India Company's army.[37] In 1829, Masson traveled through the princely state of Punjab, gathering useful intelligence for the Company in return for a promise of clemency.[37] An aspect of this arrangement was the additional requirement to hand over to the Company any historical artifacts acquired during his travels. Masson, who had versed himself in the classics, especially in the military campaigns of Alexander the Great, chose for his wanderings some of the same towns that had featured in Alexander's campaigns, and whose archaeological sites had been noted by the campaign's chroniclers.[37] Masson's major archaeological discovery in the Punjab was Harappa, a metropolis of the Indus civilisation in the valley of Indus's tributary, the Ravi river. Masson made copious notes and illustrations of Harappa's rich historical artifacts, many lying half-buried. In 1842, Masson included his observations of Harappa in the book Narrative of Various Journeys in Baluchistan, Afghanistan, and the Punjab. He dated the Harappa ruins to a period of recorded history, erroneously mistaking it to have been described earlier during Alexander's campaign.[37] Masson was impressed by the site's extraordinary size and by several large mounds formed from long-existing erosion.[37][t]

Two years later, the Company contracted Alexander Burnes to sail up the Indus to assess the feasibility of water travel for its army.[37] Burnes, who also stopped in Harappa, noted the baked bricks employed in the site's ancient masonry, but noted also the haphazard plundering of these bricks by the local population.[37]

Despite these reports, Harappa was raided even more perilously for its bricks after the British annexation of the Punjab in 1848–49. A considerable number were carted away as track ballast for the railway lines being laid in the Punjab.[39] Nearly 160 km (100 mi) of railway track between Multan and Lahore, laid in the mid-1850s, was supported by Harappan bricks.[39]

In 1861, three years after the dissolution of the East India Company and the establishment of Crown rule in India, archaeology on the subcontinent became more formally organised with the founding of the Archaeological Survey of India (ASI).[40] Alexander Cunningham, the Survey's first director-general, who had visited Harappa in 1853 and had noted the imposing brick walls, visited again to carry out a survey, but this time of a site whose entire upper layer had been stripped in the interim.[40][41] Although his original goal of demonstrating Harappa to be a lost Buddhist city mentioned in the seventh century CE travels of the Chinese visitor, Xuanzang, proved elusive,[41] Cunningham did publish his findings in 1875.[42] For the first time, he interpreted a Harappan stamp seal, with its unknown script, which he concluded to be of an origin foreign to India.[42][43]

Archaeological work in Harappa thereafter lagged until a new viceroy of India, Lord Curzon, pushed through the Ancient Monuments Preservation Act 1904, and appointed John Marshall to lead the ASI.[44] Several years later, Hiranand Sastri, who had been assigned by Marshall to survey Harappa, reported it to be of non-Buddhist origin, and by implication more ancient.[44] Expropriating Harappa for the ASI under the Act, Marshall directed ASI archaeologist Daya Ram Sahni to excavate the site's two mounds.[44]

Farther south, along the main stem of the Indus in Sind province, the largely undisturbed site of Mohenjo-daro had attracted notice.[44] Marshall deputed a succession of ASI officers to survey the site. These included D. R. Bhandarkar (1911), R. D. Banerji (1919, 1922–1923), and M. S. Vats (1924).[45] In 1923, on his second visit to Mohenjo-daro, Baneriji wrote to Marshall about the site, postulating an origin in "remote antiquity", and noting a congruence of some of its artifacts with those of Harappa.[46] Later in 1923, Vats, also in correspondence with Marshall, noted the same more specifically about the seals and the script found at both sites.[46] On the weight of these opinions, Marshall ordered crucial data from the two sites to be brought to one location and invited Banerji and Sahni to a joint discussion.[47] By 1924, Marshall had become convinced of the significance of the finds, and on 24 September 1924, made a tentative but conspicuous public intimation in the Illustrated London News:[17]

"Not often has it been given to archaeologists, as it was given to Schliemann at Tiryns and Mycenae, or to Stein in the deserts of Turkestan, to light upon the remains of a long forgotten civilisation. It looks, however, at this moment, as if we were on the threshold of such a discovery in the plains of the Indus."

In the next issue, a week later, the British Assyriologist Archibald Sayce was able to point to very similar seals found in Bronze Age levels in Mesopotamia and Iran, giving the first strong indication of their date; confirmations from other archaeologists followed.[48] Systematic excavations began in Mohenjo-daro in 1924–25 with that of K. N. Dikshit, continuing with those of H. Hargreaves (1925–1926), and Ernest J. H. Mackay (1927–1931).[45] By 1931, much of Mohenjo-daro had been excavated, but occasional excavations continued, such as the one led by Mortimer Wheeler, a new director-general of the ASI appointed in 1944, and including Ahmad Hasan Dani.[49]

After the partition of India in 1947, when most excavated sites of the Indus Valley Civilisation lay in territory awarded to Pakistan, the Archaeological Survey of India, its area of authority reduced, carried out large numbers of surveys and excavations along the Ghaggar-Hakra system in India.[50][u] Some speculated that the Ghaggar-Hakra system might yield more sites than the Indus river basin.[51] According to archaeologist Ratnagar, many Ghaggar-Hakra sites in India and Indus Valley sites in Pakistan are actually those of local cultures; some sites display contact with Harappan civilisation, but only a few are fully developed Harappan ones.[52] As of 1977, about 90% of the Indus script seals and inscribed objects discovered were found at sites in Pakistan along the Indus river, while other sites accounts only for the remaining 10%.[v][53][54] By 2002, over 1,000 Mature Harappan cities and settlements had been reported, of which just under a hundred had been excavated,[f] mainly in the general region of the Indus and Ghaggar-Hakra rivers and their tributaries; however, there are only five major urban sites: Harappa, Mohenjo-daro, Dholavira, Ganeriwala and Rakhigarhi.[55] As of 2008, about 616 sites have been reported in India,[20] whereas 406 sites have been reported in Pakistan.[20]

Unlike India, in which after 1947, the ASI attempted to "Indianise" archaeological work in keeping with the new nation's goals of national unity and historical continuity, in Pakistan the national imperative was the promotion of Islamic heritage, and consequently archaeological work on early sites was left to foreign archaeologists.[56] After the partition, Mortimer Wheeler, the Director of ASI from 1944, oversaw the establishment of archaeological institutions in Pakistan, later joining a UNESCO effort tasked to conserve the site at Mohenjo-daro.[57] Other international efforts at Mohenjo-daro and Harappa have included the German Aachen Research Project Mohenjo-daro, the Italian Mission to Mohenjo-daro, and the US Harappa Archaeological Research Project (HARP) founded by George F. Dales.[58] Following a chance flash flood which exposed a portion of an archaeological site at the foot of the Bolan Pass in Balochistan, excavations were carried out in Mehrgarh by French archaeologist Jean-François Jarrige and his team in the early 1970s.[59]

Chronology

[edit]

The cities of the ancient Indus had "social hierarchies, their writing system, their large planned cities and their long-distance trade [which] mark them to archaeologists as a full-fledged 'civilisation.'[60] The mature phase of the Harappan civilisation lasted from c. 2600–1900 BCE. With the inclusion of the predecessor and successor cultures – Early Harappan and Late Harappan, respectively – the entire Indus Valley Civilisation may be taken to have lasted from the 33rd to the 14th centuries BCE. It is part of the Indus Valley Tradition, which also includes the pre-Harappan occupation of Mehrgarh, the earliest farming site of the Indus Valley.[8][61]

Several periodisations are employed for the IVC.[8][61] The most commonly used classifies the Indus Valley Civilisation into Early, Mature and Late Harappan Phase.[62] An alternative approach by Shaffer divides the broader Indus Valley Tradition into four eras, the pre-Harappan "Early Food Producing Era", and the Regionalisation, Integration, and Localisation eras, which correspond roughly with the Early Harappan, Mature Harappan, and Late Harappan phases.[7][63]

Dates (BCE) Main phase Mehrgarh phases Harappan phases Post-Harappan phases Era
7000–5500 Pre-Harappan Mehrgarh I
(aceramic Neolithic)
Early Food Producing Era
5500–3300 Pre-Harappan/Early Harappan[64] Mehrgarh II–VI
(ceramic Neolithic)
Regionalisation Era
c. 4000–2500/2300 (Shaffer)[65]
c. 5000–3200 (Coningham & Young)[66]
3300–2800 Early Harappan[64]
c. 3300–2800 (Mughal)[67][64][68]
c. 5000–2800 (Kenoyer)
[64]
Harappan 1
(Ravi Phase; Hakra Ware)
2800–2600 Mehrgarh VII Harappan 2
(Kot Diji Phase,
Nausharo I)
2600–2450 Mature Harappan
(Indus Valley Civilisation)
Harappan 3A (Nausharo II) Integration Era
2450–2200 Harappan 3B
2200–1900 Harappan 3C
1900–1700 Late Harappan Harappan 4 Cemetery H[69]
Ochre Coloured Pottery[69]
Localisation Era
1700–1300 Harappan 5
1300–600 Post-Harappan
Iron Age India
Painted Grey Ware (1200–600)
Vedic period (c. 1500–500)
Regionalisation
c. 1200–300 (Kenoyer)[64]
c. 1500[70]–600 (Coningham & Young)[71]
600–300 Northern Black Polished Ware (Iron Age) (700–200)
Second urbanisation (c. 500–200)
Integration[71]

Pre-Harappan era: Mehrgarh

[edit]

Mehrgarh is a Neolithic (7000 BCE to c. 2500 BCE) mountain site in the Balochistan province of Pakistan,[72] which gave new insights on the emergence of the Indus Valley Civilisation.[60][w] Mehrgarh is one of the earliest sites with evidence of farming and herding in South Asia.[73][74] Mehrgarh was influenced by the Near Eastern Neolithic,[75] with similarities between "domesticated wheat varieties, early phases of farming, pottery, other archaeological artefacts, some domesticated plants and herd animals".[76][x]

Jean-Francois Jarrige argues for an independent origin of Mehrgarh. Jarrige notes "the assumption that farming economy was introduced full-fledged from Near-East to South Asia",[77][x][y][z] and the similarities between Neolithic sites from eastern Mesopotamia and the western Indus valley, which are evidence of a "cultural continuum" between those sites. But given the originality of Mehrgarh, Jarrige concludes that Mehrgarh has an earlier local background, and is not a "'backwater' of the Neolithic culture of the Near East".[77]

Lukacs and Hemphill suggest an initial local development of Mehrgarh, with a continuity in cultural development but a change in population. According to Lukacs and Hemphill, while there is a strong continuity between the Neolithic and Chalcolithic (Copper Age) cultures of Mehrgarh, dental evidence shows that the Chalcolithic population did not descend from the Neolithic population of Mehrgarh,[91] which "suggests moderate levels of gene flow".[91][aa] Mascarenhas et al. (2015) note that "new, possibly West Asian, body types are reported from the graves of Mehrgarh beginning in the Togau phase (3800 BCE)."[92]

Gallego Romero et al. (2011) state that their research on lactose tolerance in India suggests that "the west Eurasian genetic contribution identified by Reich et al. (2009) principally reflects gene flow from Iran and the Middle East."[93] They further note that "[t]he earliest evidence of cattle herding in South Asia comes from the Indus River Valley site of Mehrgarh and is dated to 7,000 YBP."[93][ab]

Early Harappan

[edit]
Early Harappan Period, c. 3300–2600 BCE
Terracotta boat in the shape of a bull, and female figurines. Kot Diji period (c. 2800–2600 BC).

The Early Harappan Ravi Phase, named after the nearby Ravi River, lasted from c. 3300 BCE until 2800 BCE. It started when farmers from the mountains gradually moved between their mountain homes and the lowland river valleys,[95] and is related to the Hakra Phase, identified in the Ghaggar-Hakra River Valley to the west, and predates the Kot Diji Phase (2800–2600 BCE, Harappan 2), named after a site in northern Sindh, Pakistan, near Mohenjo-daro. The earliest examples of the Indus script date to the 3rd millennium BCE.[96][97]

The mature phase of earlier village cultures is represented by Rehman Dheri and Amri in Pakistan.[98] Kot Diji represents the phase leading up to Mature Harappan, with the citadel representing centralised authority and an increasingly urban quality of life. Another town of this stage was found at Kalibangan in India on the Hakra River.[99]

Trade networks linked this culture with related regional cultures and distant sources of raw materials, including lapis lazuli and other materials for bead-making. By this time, villagers had domesticated numerous crops, including peas, sesame seeds, dates, and cotton, as well as animals, including the water buffalo. Early Harappan communities turned to large urban centres by 2600 BCE, from where the mature Harappan phase started. The latest research shows that Indus Valley people migrated from villages to cities.[100][101]

The final stages of the Early Harappan period are characterised by the building of large walled settlements, the expansion of trade networks, and the increasing integration of regional communities into a "relatively uniform" material culture in terms of pottery styles, ornaments, and stamp seals with Indus script, leading into the transition to the Mature Harappan phase.[102]

Mature Harappan

[edit]
Mature Harappan Period, c. 2600–1900 BCE
Mature Harappan
View of Granary and Great Hall on Mound F in Harappa
Archaeological remains of washroom drainage system at Lothal
Dholavira in Gujarat, India, is one of the largest cities of Indus Valley civilisation, with stepwell steps to reach the water level in artificially constructed reservoirs.[103]

According to Giosan et al. (2012), the slow southward migration of the monsoons across Asia initially allowed the Indus Valley villages to develop by taming the floods of the Indus and its tributaries. Flood-supported farming led to large agricultural surpluses, which in turn supported the development of cities. The IVC residents did not develop irrigation capabilities, relying mainly on the seasonal monsoons leading to summer floods.[4] Brooke further notes that the development of advanced cities coincides with a reduction in rainfall, which may have triggered a reorganisation into larger urban centres.[104][e]

According to J.G. Shaffer and D.A. Lichtenstein,[105] the Mature Harappan civilisation was "a fusion of the Bagor, Hakra, and Kot Diji traditions or 'ethnic groups' in the Ghaggar-Hakra valley on the borders of India and Pakistan".[106]

Also, according to a more recent summary by Maisels (2003), "The Harappan oecumene formed from a Kot Dijian/Amri-Nal synthesis". He also says that, in the development of complexity, the site of Mohenjo-daro has priority, along with the Hakra-Ghaggar cluster of sites, "where Hakra wares actually precede the Kot Diji related material". He sees these areas as "catalytic in producing the fusion from Hakra, Kot Dijian and Amri-Nal cultural elements that resulted in the gestalt we recognize as Early Harappan (Early Indus)."[107]

By 2600 BCE, the Early Harappan communities turned into large urban centres. Such urban centres include Harappa, Ganeriwala, Mohenjo-daro in modern-day Pakistan, and Dholavira, Kalibangan, Rakhigarhi, Rupar, and Lothal in modern-day India.[108] In total, more than 1,000 settlements have been found, mainly in the general region of the Indus and Ghaggar-Hakra Rivers and their tributaries.[f]

Cities

[edit]

A sophisticated and technologically advanced urban culture is evident in the Indus Valley Civilisation, making them the first urban centre in the region. The high degree of forward-looking urban planning demonstrates the existence of well-organised local governments capable of formulating and executing a large-scale forward-looking development program, and which placed a high value on public health and hygiene, or, alternatively, accessibility to the means of religious ritual.[109]

As seen in Harappa, Mohenjo-daro and the recently[when?] partially excavated Rakhigarhi, this urban plan included the world's first known city sanitation systems. Within the city, individual homes or groups of homes obtained water from wells. From a room that appears to have been set aside for bathing, waste water was directed to covered drains, which lined the major streets. Houses opened only to inner courtyards and smaller lanes. The housebuilding in some villages in the region still resembles in some respects the housebuilding of the Harappans.[ac]

The Indus Valley cities developed elaborate drainage and sewerage systems, described by archaeologists as well-planned and advanced compared with many contemporary societies. Their urban architecture included dockyards, granaries, warehouses, brick platforms, and massive protective walls, which were likely intended both as flood defenses and as fortifications.[111]

The purpose of the citadel remains debated. In sharp contrast to this civilisation's contemporaries, Mesopotamia and ancient Egypt, no large monumental structures were built. There is no conclusive evidence of palaces or temples.[112] Some structures are thought to have been granaries. Found at one city is an enormous well-built bath (the "Great Bath"), which may have been a public bath. Although the citadels were walled, it is far from clear that these structures were defensive; many may have been flood defenses.

Most city dwellers appear to have been traders or artisans, who lived with others pursuing the same occupation in well-defined neighbourhoods. Materials from distant regions were used in the cities for constructing seals, beads and other objects. Among the artefacts discovered were beautiful glazed faïence beads. Steatite seals have images of animals, people (perhaps gods), and other types of inscriptions, including the yet un-deciphered writing system of the Indus Valley Civilisation. Some of the seals were used to stamp clay on trade goods.

Although some houses were larger than others, Indus civilisation cities were remarkable for their apparent, if relative, egalitarianism. All the houses had access to water and drainage facilities. This gives the impression of a society with relatively low wealth concentration.[113]

Authority and governance

[edit]

Archaeological records provide no immediate answers for the question of who ruled Harappan cities and how. Nonetheless, there are indications of complex decisions being taken and large-scale mobilisation of resources. For instance, the majority of the cities were constructed in a highly uniform and well-planned grid pattern, divided into two levels from ground making one part slightly higher than the other; such complex urban planning, combined with the construction of large public works projects, demonstrates the existence of some sort of planning authority.[114] The remarkable consistency of Harappan weights and measures, as evident in pottery, seals, weights and bricks, also indicates the existence of a central authority able to make definitive regulations.[115]

These are some major theories:[citation needed]

  • There was a single state or federation ruling all or most of the Indus Valley. Proponents of this theory believe that the presence of standardised weights and measures demonstrates the presence of a central authority.
  • There was no single ruler, with each city being a self-governing city state.

Metallurgy

[edit]

Harappans evolved some new techniques in metallurgy and produced copper, bronze, lead, and tin.[citation needed]

A touchstone bearing gold streaks was found in Banawali, which was probably used for testing the purity of gold (such a technique is still used in some parts of India).[106]

Metrology

[edit]
Harappan weights found in the Indus Valley (National Museum, New Delhi)[116]

The people of the Indus civilisation achieved great accuracy in measuring length, mass, and time. They were among the first to develop a system of uniform weights and measures.[dubiousdiscuss] A comparison of available objects indicates large scale variation across the Indus territories. Their smallest division, which is marked on an ivory scale found in Lothal in Gujarat, was approximately 1.704 mm, the smallest division ever recorded on a scale of the Bronze Age.[citation needed] Harappan engineers followed the decimal division of measurement for all practical purposes, including the measurement of mass as revealed by their hexahedron weights.[citation needed]

These chert weights were in a ratio of 5:2:1 with weights of 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 200, and 500 units, with each unit weighing approximately 28 grams, similar to the English Imperial ounce or Greek uncia, and smaller objects were weighed in similar ratios with the units of 0.871. However, as in other cultures, actual weights were not uniform throughout the area. The weights and measures later used in Kautilya's Arthashastra (4th century BCE) are the same as those used in Lothal.[117]

Arts and crafts

[edit]

Many Indus Valley seals and items in pottery and terracotta have been found, along with a very few stone sculptures and some gold jewellery and bronze vessels. Some anatomically detailed figurines in terracotta, bronze, and steatite have been found at excavation sites, the former probably mostly toys.[118] The Harappans also made various toys and games, among them cubical dice (with one to six holes on the faces), which were found in sites like Mohenjo-daro.[119]

The terracotta figurines included cows, bears, monkeys, and dogs. The animal depicted on a majority of seals at sites of the mature period has not been clearly identified. Part bull, part zebra, with a majestic horn, it has been a source of speculation. As yet, there is insufficient evidence to substantiate claims that the image had religious or cultic significance, but the prevalence of the image raises the question of whether or not the animals in images of the IVC are religious symbols.[120]

Many crafts including, "shell working, ceramics, and agate and glazed steatite bead making" were practised and the pieces were used in the making of necklaces, bangles, and other ornaments from all phases of Harappan culture. Some of these crafts are still practised in the subcontinent today.[114] Some make-up and toiletry items (a special kind of combs (kakai), the use of collyrium and a special three-in-one toiletry gadget) that were found in Harappan contexts still have similar counterparts in modern India.[121] Terracotta female figurines were found (c. 2800–2600 BCE) which had red colour applied to the "manga" (line of partition of the hair).[121]

Archeological remains from 2000 to 3000 BC have been found from the city of Lothal of pieces on a board that resemble chess.[122]

The finds from Mohenjo-daro were initially deposited in the Lahore Museum, but later moved to the ASI headquarters at New Delhi, where a new "Central Imperial Museum" was being planned for the new capital of the British Raj, in which at least a selection would be displayed. It became apparent that Indian independence was approaching, but the Partition of India was not anticipated until late in the process. The new Pakistani authorities requested the return of the Mohenjo-daro pieces excavated on their territory, but the Indian authorities refused. Eventually an agreement was reached, whereby the finds, totalling some 12,000 objects (most sherds of pottery), were split equally between the countries; in some cases this was taken very literally, with some necklaces and girdles having their beads separated into two piles. In the case of the "two most celebrated sculpted figures", Pakistan asked for and received the so-called Priest-King figure, while India retained the much smaller Dancing Girl.[123]

Though written considerably later, the arts treatise Natya Shastra (c. 200 BCE – 200 CE) classifies musical instruments into four groups based on their means of acoustical production—strings, membranes, solid materials and air—and it is probable that such instruments had existed since the IVC.[124] Archeological evidence indicates the use of simple rattles and vessel flutes, while iconographical evidence suggests early harps and drums were also used.[125] An ideogram in the IVC contains the earliest known depiction of an arched harp, dated sometime before 1800 BCE.[126]

Human statuettes

[edit]

A handful of realistic statuettes have been found at IVC sites, of which much the most famous[opinion] is the lost-wax casting bronze statuette of a slender-limbed Dancing Girl adorned with bangles, found in Mohenjo-daro. Two other realistic incomplete statuettes have been found in Harappa in proper stratified excavations, which display near-Classical treatment of the human shape: the statuette of a dancer who seems to be male, and the Harappa Torso, a red jasper male torso, both now in the Delhi National Museum. Sir John Marshall reacted with surprise when he saw these two statuettes from Harappa:[127]

When I first saw them I found it difficult to believe that they were prehistoric; they seemed to completely upset all established ideas about early art, and culture. Modelling such as this was unknown in the ancient world up to the Hellenistic age of Greece, and I thought, therefore, that some mistake must surely have been made; that these figures had found their way into levels some 3000 years older than those to which they properly belonged ... Now, in these statuettes, it is just this anatomical truth which is so startling; that makes us wonder whether, in this all-important matter, Greek artistry could possibly have been anticipated by the sculptors of a far-off age on the banks of the Indus.[127]

These statuettes remain controversial, due to their advanced style in representing the human body. Regarding the red jasper torso, the discoverer, Vats, claims a Harappan date, but Marshall considered this statuette is probably historical, dating to the Gupta period, comparing it to the much later Lohanipur torso.[128] A second rather similar grey stone torso of a dancing male was also found about 150 meters away in a secure Mature Harappan stratum. Overall, anthropologist Gregory Possehl tends to consider that these statuettes probably form the pinnacle of Indus art during the Mature Harappan period.[129]

Seals

[edit]
Stamp seals and (right) impressions, some of them with Indus script; probably made of steatite; British Museum (London)

Thousands of steatite seals have been recovered, and their physical character is fairly consistent. In size they range from squares of side 2 to 4 cm (34 to 1+12 in). In most cases they have a pierced boss at the back to accommodate a cord for handling or for use as personal adornment. In addition a large number of sealings have survived, of which only a few can be matched to the seals. The great majority of examples of the Indus script are short groups of signs on seals.[130]

Seals have been found at Mohenjo-daro depicting a figure standing on its head, and another, on the Pashupati seal, sitting cross-legged in what some[who?] call a yoga-like pose (see image, the so-called Pashupati, below). This figure has been variously identified. Sir John Marshall identified a resemblance to the Hindu god, Shiva.[131]

A human deity with the horns, hooves and tail of a bull also appears in the seals, in particular in a fighting scene with a horned tiger-like beast. This deity has been compared to the Mesopotamian bull-man Enkidu.[132][133][134] Several seals also show a man fighting two lions or tigers, a "Master of Animals" motif common to civilisations in Western and South Asia.[134][135]

Trade and transportation

[edit]
Archaeological discoveries suggest that trade routes between Mesopotamia and the Indus were active during the 3rd millennium BCE, leading to the development of Indus–Mesopotamia relations.[136]
Boat with direction-finding birds to find land.[137][138] Model of Mohenjo-daro tablet, 2500–1750 BCE.(National Museum, New Delhi).[139][140] Flat-bottomed river row-boats appear in two Indus seals, but their seaworthiness is debatable.[141]

The Indus Valley civilisation may have had bullock carts identical to those seen throughout South Asia today, as well as boats. Most of these boats were probably small, flat-bottomed craft, perhaps driven by sail, similar to those one can see on the Indus River today. An extensive canal network, used for irrigation, has however also been discovered by H.-P. Francfort.[142]

During 4300–3200 BCE of the chalcolithic period (copper age), the Indus Valley Civilisation area shows ceramic similarities with southern Turkmenistan and northern Iran which suggest considerable mobility and trade. During the Early Harappan period (about 3200–2600 BCE), similarities in pottery, seals, figurines, ornaments, etc. document intensive caravan trade with Central Asia and the Iranian plateau.[143]

Judging from the dispersal of Indus civilisation artefacts, the trade networks economically integrated a huge area, including portions of Afghanistan, the coastal regions of Persia connected by the Gulf of Oman from the Arabian Sea, northern and western India, and Mesopotamia, leading to the development of Indus-Mesopotamia relations. Studies of tooth enamel from individuals buried at Harappa suggest that some residents had migrated to the city from beyond the Indus Valley.[144] Ancient DNA studies of graves at Bronze Age sites at Gonur Depe, Turkmenistan, and Shahr-e Sukhteh, Iran, have identified 11 individuals of South Asian descent, who are presumed to be of mature Indus Valley origin.[145]

There was an extensive maritime trade network operating between the Harappan and Mesopotamian civilisations as early as the middle Harappan Phase, with much commerce being handled by "middlemen merchants from Dilmun" (modern Bahrain, Eastern Arabia and Failaka located in the Persian Gulf).[146] Such long-distance sea trade became feasible with the development of plank-built watercraft, equipped with a single central mast supporting a sail of woven rushes or cloth.[147]

However, the evidence of sea-borne trade involving the Harappan civilisation is not firm. In their book Rise of Civilization in India and Pakistan archaeologists Bridget Allchin and Raymond Allchin write:

... (p. 173) the settlement at Lothal ... along the east side was a brick basin. It is claimed by its excavator to have been a dockyard, connected by channels to a neighbouring estuary. ... On its edge the excavator discovered several heavily-pierced stones, similar to modern anchor stones employed by traditional seafaring communities of Western India. This interpretation, however, has been challenged, and indeed the published levels of the basin and its entrance relative to the modern sea level seem to argue against it. Leshnik has cogently suggested that it was a tank for the reception of sweet water, channelled from higher ground inland to an area where the local water supplies were anciently, as still today, saline. We regard either interpretation as still unproven, but favour the latter. ... (p. 188–189) The discussion of trade focuses attention upon methods of transport. Several representations of ships are found on seals and graffiti at Harappa, Mohenjo-daro (Figs. 7.15–7.16], etc, and a terracotta model of a ship, with a stick impressed socket for the mast and eyeholes for fixing rigging comes from Lothal. We have already seen above that the great brick tank, interpreted by Rao as a dock at Lothal, cannot yet be certainly identified. The evidence of sea trade and contact during the Harappan period is largely circumstantial, or derived from inferences from the Mesopotamian texts, as detailed above. (Figure 7. 15 had caption: Mohenjo-daro: representation of ship on a stone seal (length 4.3 cm) (after Mackay). Figure 7.16 Mohenjo-daro: representation of ship on terracotta amulet (length 4.5 cm) after Dales)

Daniel T. Potts writes:

It is generally assumed that most trade between the Indus Valley (ancient Meluhha?) and western neighbors proceeded up the Persian Gulf rather than overland. Although there is no incontrovertible proof that this was indeed the case, the distribution of Indus-type artifacts on the Oman peninsula, on Bahrain and in southern Mesopotamia makes it plausible that a series of maritime stages linked the Indus Valley and the Gulf region. If this is accepted, then the presence of etched carnelian beads, a Harappan-style cubical stone weight, and a Harappan-style cylinder seal at Susa (Amiet 1986a, Figs. 92-94) may be evidence of maritime trade between Susa and the Indus Valley in the late 3rd millennium BCE. On the other hand, given that similar finds, particularly etched carnelian beads, are attested at landlocked sites including Tepe Hissar (Tappe Heṣār), Shah Tepe (Šāh-Tappe), Kalleh Nisar (Kalla Nisār), Jalalabad (Jalālābād), Marlik (Mārlik) and Tepe Yahya (Tappe Yaḥyā) (Possehl 1996, pp. 153-54), other mechanisms, including overland traffic by peddlers or caravans, may account for their presence at Susa.[148]

In the 1980s, important archaeological discoveries were made at Ras al-Jinz (Oman), demonstrating maritime Indus Valley connections with the Arabian Peninsula.[147][149][150]

Dennys Frenez recently regards that:

Indus-type and Indus-related artifacts were found over a large and differentiated ecumene, encompassing Central Asia, the Iranian Plateau, Mesopotamia and the northern Levant, the Persian Gulf, and the Oman Peninsula. The discovery of Indus trade tools (seals, weights, and containers) across the entire Middle Asia, complemented by information from Mesopotamian cuneiform texts, shows that entrepreneurs from the Indus Valley regularly ventured into these regions to transact with the local socioeconomic and political entities. However, Indus artifacts were also exchanged beyond this core region, eventually reaching as far [as] the Nile River valley, Anatolia, and the Caucasus. On the contrary, only a handful of exotic trade tools and commodities have been found at sites in the Greater Indus Valley. The success of Indus trade in Central and Western Asia did not only rely on the dynamic entrepreneurialism of Indus merchants and the exotic commodities they offered. Specific products were proactively designed and manufactured in the Indus Valley to fulfill the particular needs of foreign markets, and Indus craftspeople moved beyond their native cultural sphere adapting their distinctive productions to the taste of foreign elites or reworking indigenous models. The adoption of specific seals and iconographies to regulate external trade activities suggests a conscious attempt at implementing a coordinated supraregional marketing strategy[...][151]

Agriculture

[edit]

According to Gangal et al. (2014), there is strong archeological and geographical evidence that neolithic farming spread from the Near East into north-west India, but there is also "good evidence for the local domestication of barley and the zebu cattle at Mehrgarh."[75][ad]

According to Jean-Francois Jarrige, farming had an independent local origin at Mehrgarh, which he argues is not merely a "'backwater' of the Neolithic culture of the Near East", despite similarities between Neolithic sites from eastern Mesopotamia and the western Indus valley which are evidence of a "cultural continuum" between those sites.[77] Archaeologist Jim G. Shaffer writes that the Mehrgarh site "demonstrates that food production was an indigenous South Asian phenomenon" and that the data support interpretation of "the prehistoric urbanisation and complex social organisation in South Asia as based on indigenous, but not isolated, cultural developments".[152]

Jarrige notes that the people of Mehrgarh used domesticated wheats and barley,[153] while Shaffer and Liechtenstein note that the major cultivated cereal crop was naked six-row barley, a crop derived from two-row barley.[154] Gangal agrees that "Neolithic domesticated crops in Mehrgarh include more than 90% barley," noting that "there is good evidence for the local domestication of barley." Yet, Gangal also notes that the crop also included "a small amount of wheat," which "are suggested to be of Near-Eastern origin, as the modern distribution of wild varieties of wheat is limited to Northern Levant and Southern Turkey."[75][ae]

The cattle that are often portrayed on Indus seals are humped Indian aurochs (Bos primigenius namadicus), which are similar to Zebu cattle. Zebu cattle are still common in India, and in Africa. They are different from European cattle (Bos primigenius taurus), and are believed to have been independently domesticated on the Indian subcontinent, probably in the Baluchistan region of Pakistan.[155][75][ad]

Research by J. Bates et al. (2016) confirms that Indus populations were the earliest people to use complex multi-cropping strategies across both seasons, growing foods during summer (rice, millets and beans) and winter (wheat, barley and pulses), which required different watering regimes.[156] Bates et al. (2016) also found evidence for an entirely separate domestication process of rice in ancient South Asia, based around the wild species Oryza nivara. This led to the local development of a mix of "wetland" and "dryland" agriculture of local Oryza sativa indica rice agriculture, before the truly "wetland" rice Oryza sativa japonica arrived around 2000 BCE.[157]

Food

[edit]

According to archeological finds, the Indus Valley civilisation had a diet dominated by meats of animals such as cattle, buffalo, goat, pig and chicken.[158][159] Remnants of dairy products were also discovered. According to Akshyeta Suryanarayan et al.,[af] available evidence indicates culinary practices to be common over the region; food-constituents were dairy products (in low proportion), ruminant carcass meat, and either non-ruminant adipose fats, plants, or mixtures of these products.[160] The dietary pattern remained the same throughout the decline.[160]

Seven food-balls ("laddus") were found in intact form, along with two figurines of bulls and a hand-held copper adze, during excavations in 2017 from western Rajasthan.[161] Dated to about 2600 BCE, they were likely composed of legumes, primarily mung, and cereals.[161] The authors speculated the food-balls to be of a ritualistic significance, given the finds of bull figurines, adze and a seal in immediate vicinity.[161][162]

Language

[edit]

The Harappan language is the unknown language (or languages) of the Indus Valley civilization. The Harappan script is yet undeciphered, indeed it has not even been demonstrated to be a writing system, and therefore the language remains unknown.[163] The language being yet unattested in readable contemporary sources, hypotheses regarding its nature are based on possible loanwords, the substratum in Vedic Sanskrit, and some terms recorded in Sumerian cuneiform (such as Meluhha), in conjunction with analyses of the Harappan script.

There are some possible loanwords from the language of the Indus Valley civilization. Meluḫḫa or Melukhkha (Sumerian: 𒈨𒈛𒄩𒆠 Me-luḫ-ḫaKI) is the Sumerian name of a prominent trading partner of Sumer during the Middle Bronze Age. Its identification remains an open question, but most scholars associate it with the Indus Valley Civilisation. Of the substratum in Vedic Sanskrit, the bulk have no proven basis in any of the known families, suggesting a source in one or more lost languages. One of these lost languages could have been the Harappan language, which Witzel labelled as the Kubhā-Vipāś substrate.[164]

One hypothesis has been suggested that the bearers of the IVC corresponded to proto-Dravidians linguistically, the break-up of proto-Dravidian corresponding to the break-up of the Late Harappan culture.[165] Finnish Indologist Asko Parpola concludes that the uniformity of the Indus inscriptions precludes any possibility of widely different languages being used, and that an early form of Dravidian language must have been the language of the Indus people.[166] Today, the Dravidian language family is concentrated mostly in southern India and northern and eastern Sri Lanka, but pockets of it still remain throughout the rest of India and Pakistan (the Brahui language), which lends credence to the theory.

Possible writing system

[edit]
Ten Indus characters from the northern gate of Dholavira, dubbed the Dholavira signboard

Between 400 and as many as 600 distinct Indus symbols[167] have been found on stamp seals, small tablets, ceramic pots and more than a dozen other materials, including a "signboard" that apparently once hung over the gate of the inner citadel of the Indus city of Dholavira. Typical Indus inscriptions are around five characters in length,[168] most of which (aside from the Dholavira "signboard") are tiny; the longest on any single object (inscribed on a copper plate[169]) has a length of 34 symbols.

While the Indus Valley Civilisation is generally characterised as a literate society on the evidence of these inscriptions, this description has been challenged by Farmer, Sproat, and Witzel (2004)[170] who argue that the Indus system did not encode language, but was instead similar to a variety of non-linguistic sign systems used extensively in the Near East and other societies, to symbolise families, clans, gods, and religious concepts. Others have claimed on occasion that the symbols were exclusively used for economic transactions, but this claim leaves unexplained the appearance of Indus symbols on many ritual objects, many of which were mass-produced in moulds. No parallels to these mass-produced inscriptions are known in any other early ancient civilisations.[171]

In a 2009 study by P.N. Rao et al. published in Science, computer scientists, comparing the pattern of symbols to various linguistic scripts and non-linguistic systems, including DNA and a computer programming language, found that the Indus script's pattern is closer to that of spoken words, supporting the hypothesis that it codes for an as-yet-unknown language.[172][173]

Farmer, Sproat, and Witzel have disputed this finding, pointing out that Rao et al. did not actually compare the Indus signs with "real-world non-linguistic systems" but rather with "two wholly artificial systems invented by the authors, one consisting of 200,000 randomly ordered signs and another of 200,000 fully ordered signs, that they spuriously claim represent the structures of all real-world non-linguistic sign systems".[174] Farmer et al. have also demonstrated that a comparison of a non-linguistic system like medieval heraldic signs with natural languages yields results similar to those that Rao et al. obtained with Indus signs. They conclude that the method used by Rao et al. cannot distinguish linguistic systems from non-linguistic ones.[175]

The messages on the seals have proved to be too short to be decoded by a computer. Each seal has a distinctive combination of symbols and there are too few examples of each sequence to provide a sufficient context. The symbols that accompany the images vary from seal to seal, making it impossible to derive a meaning for the symbols from the images. There have, nonetheless, been a number of interpretations offered for the meaning of the seals. These interpretations have been marked by ambiguity and subjectivity.[175]: 69 

Photos of many of the thousands of extant inscriptions are published in the Corpus of Indus Seals and Inscriptions (1987, 1991, 2010), edited by Asko Parpola and his colleagues. The most recent volume republished photos taken in the 1920s and 1930s of hundreds of lost or stolen inscriptions, along with many discovered in the last few decades; formerly, researchers had to supplement the materials in the Corpus by study of the tiny photos in the excavation reports of Marshall (1931), MacKay (1938, 1943), Wheeler (1947), or reproductions in more recent scattered sources.

Religion

[edit]
The Pashupati seal, showing a seated figure surrounded by animals
Swastika seals of Indus Valley Civilisation in British Museum

The religion and belief system of the Indus Valley people has received considerable attention, especially from the view of identifying precursors to deities and religious practices of Indian religions that later developed in the area. However, due to the sparsity of evidence, which is open to varying interpretations, and the fact that the Indus script remains undeciphered, the conclusions are partly speculative and largely based on a retrospective view from a much later Hindu perspective.[176]

Early and influential work in the area that set the trend for Hindu interpretations of archaeological evidence from the Harappan sites[177] was that of John Marshall, who in 1931 identified the following as prominent features of the Indus religion: a Great Male God and a Mother Goddess; deification or veneration of animals and plants; a symbolic representation of the phallus (linga) and vulva (yoni); and, use of baths and water in religious practice. Marshall's interpretations have been much debated, and sometimes disputed over the following decades.[178][179]

One Indus Valley seal shows a seated figure with a horned headdress, possibly tricephalic and possibly ithyphallic, surrounded by animals. Marshall identified the figure as an early form of the Hindu god Shiva (or Rudra), who is associated with asceticism, yoga, and linga; regarded as a lord of animals, and often depicted as having three eyes. The seal has hence come to be known as the Pashupati Seal, after Pashupati (lord of all animals), an epithet of Shiva.[178][180] While Marshall's work has earned some support, many critics and even supporters have raised several objections. Doris Srinivasan has argued that the figure does not have three faces or yogic posture and that in Vedic literature Rudra was not a protector of wild animals.[181][182] Herbert Sullivan and Alf Hiltebeitel also rejected Marshall's conclusions, with the former claiming that the figure was female, while the latter associated the figure with Mahisha, the Buffalo God and the surrounding animals with vahanas (vehicles) of deities for the four cardinal directions.[183][184] Writing in 2002, Gregory L. Possehl concluded that while it would be appropriate to recognise the figure as a deity, its association with the water buffalo, and its posture as one of ritual discipline, regarding it as a proto-Shiva would be going too far.[180] Despite the criticisms of Marshall's association of the seal with a proto-Shiva icon, it has been interpreted as the Tirthankara Rishabhanatha by some scholars of Jainism like Vilas Sangave.[185] Historians such as Heinrich Zimmer and Thomas McEvilley believe that there is a connection between first Jain Tirthankara Rishabhanatha and the Indus Valley Civilisation.[186][187]

Marshall hypothesised the existence of a cult of Mother Goddess worship based upon excavation of several female figurines and thought that this was a precursor of the Hindu sect of Shaktism. However the function of the female figurines in the life of Indus Valley people remains unclear, and Possehl does not regard the evidence for Marshall's hypothesis to be "terribly robust".[188] Some of the baetyls interpreted by Marshall to be sacred phallic representations are now thought to have been used as pestles or game counters instead, while the ring stones that were thought to symbolise yoni were determined to be architectural features used to stand pillars, although the possibility of their religious symbolism cannot be eliminated.[189] Many Indus Valley seals show animals, with some depicting them being carried in processions, while others show chimeric creations. One seal from Mohenjo-daro shows a half-human, a half-buffalo monster attacking a tiger, which may be a reference to the Sumerian myth of such a monster created by goddess Aruru to fight Gilgamesh.[190]

In contrast to contemporary Egyptian and Mesopotamian civilisations, Indus Valley lacks any monumental palaces, even though excavated cities indicate that the society possessed the requisite engineering knowledge.[191][192] This may suggest that religious ceremonies if any, may have been largely confined to individual homes, small temples, or the open air. Several sites have been proposed by Marshall and later scholars as possibly devoted to religious purposes, but at present only the Great Bath at Mohenjo-daro is widely thought to have been so used, as a place for ritual purification.[188][193] The funerary practices of the Harappan civilisation are marked by fractional burial (in which the body is reduced to skeletal remains by exposure to the elements before final interment), and even cremation.[194][195]

Late Harappan

[edit]
Late Harappan Period, c. 1900–1300 BCE
Bronze Late Harappan figures from a hoard at Daimabad, c. 2000 BCE (Prince of Wales Museum, Mumbai)[196]

Around 1900 BCE signs of a gradual decline began to emerge, and by around 1700 BCE most of the cities had been abandoned. Examination of human skeletons from the site of Harappa in the 2010s demonstrated that the end of the Indus civilisation saw an increase in inter-personal violence and in infectious diseases like leprosy and tuberculosis.[197][198]

According to historian Upinder Singh, "the general picture presented by the late Harappan phase is one of a breakdown of urban networks and an expansion of rural ones."[199]

During the period of approximately 1900 to 1700 BCE, multiple regional cultures emerged within the area of the Indus civilisation. The Cemetery H culture was in Punjab, Haryana, and Western Uttar Pradesh, the Jhukar culture was in Sindh, and the Rangpur culture (characterised by Lustrous Red Ware pottery) was in Gujarat.[200][201][202] Other sites associated with the Late phase of the Harappan culture are Pirak in Balochistan, Pakistan, and Daimabad in Maharashtra, India.[102]

The largest Late Harappan sites are Kudwala in Cholistan in Punjab, Bet Dwarka in Gujarat, and Daimabad in Maharashtra, which can be considered as urban, but they are smaller and few in number compared with the Mature Harappan cities. Bet Dwarka was fortified and continued to have contacts with the Persian Gulf region, but there was a general decrease of long-distance trade.[203] On the other hand, the period also saw a diversification of the agricultural base, with a diversity of crops and the advent of double-cropping, as well as a shift of rural settlement towards the east and the south.[204]

The pottery of the Late Harappan period is described as "showing some continuity with mature Harappan pottery traditions", but also distinctive differences.[205] Many sites continued to be occupied for some centuries, although their urban features declined and disappeared. Formerly typical artifacts such as stone weights and female figurines became rare. There are some circular stamp seals with geometric designs, but lacking the Indus script which characterised the mature phase of the civilisation. Script is rare and confined to potsherd inscriptions.[205] There was also a decline in long-distance trade, although the local cultures show new innovations in faience and glass making, and carving of stone beads.[102] Urban amenities such as drains and the public bath were no longer maintained, and newer buildings were "poorly constructed". Stone sculptures were deliberately vandalised, valuables were sometimes concealed in hoards, suggesting unrest, and the corpses of animals and even humans were left unburied in the streets and in abandoned buildings.[206]

During the later half of the 2nd millennium BCE, most of the post-urban Late Harappan settlements were abandoned altogether. Subsequent material culture was typically characterised by temporary occupation, "the campsites of a population which was nomadic and mainly pastoralist" and which used "crude handmade pottery".[207] However, there is greater continuity and overlap between Late Harappan and subsequent cultural phases at sites in Punjab, Haryana, and western Uttar Pradesh, primarily small rural settlements.[204][208]

Aryan migration

[edit]
Painted pottery urns from Harappa (Cemetery H culture, c. 1900–1300 BCE), National Museum, New Delhi

In 1953 Sir Mortimer Wheeler proposed that the invasion of an Indo-European tribe from Central Asia, the "Aryans", caused the decline of the Indus civilisation. As evidence, he cited a group of 37 skeletons found in various parts of Mohenjo-daro, and passages in the Vedas referring to battles and forts. However, scholars soon started to reject Wheeler's theory, since the skeletons belonged to a period after the city's abandonment and none were found near the citadel. Subsequent examinations of the skeletons by Kenneth Kennedy in 1994 showed that the marks on the skulls were caused by erosion, and not by violence.[209]

In the Cemetery H culture (the late Harappan phase in the Punjab region), some of the designs painted on the funerary urns have been interpreted through the lens of Vedic literature: for instance, peacocks with hollow bodies and a small human form inside, which has been interpreted as the souls of the dead, and a hound that can be seen as the hound of Yama, the god of death.[210][211] This may indicate the introduction of new religious beliefs during this period, but the archaeological evidence does not support the hypothesis that the Cemetery H people were the destroyers of the Harappan cities.[212]

Climate change and drought

[edit]

Suggested contributory causes for the localisation of the IVC include changes in the course of the river,[213] and climate change that is also signalled for the neighbouring areas of the Middle East.[214][215] As of 2016 many scholars believe that drought, and a decline in trade with Egypt and Mesopotamia, caused the collapse of the Indus civilisation.[216] The climate change which caused the collapse of the Indus Valley Civilisation was possibly due to "an abrupt and critical mega-drought and cooling 4,200 years ago", which marks the onset of the Meghalayan Age, the present stage of the Holocene.[217]

The Ghaggar-Hakra system was rain-fed,[218][ag][219][ah] and water-supply depended on the monsoons. The Indus Valley climate grew significantly cooler and drier from about 1800 BCE, linked to a general weakening of the monsoon at that time.[4] The Indian monsoon declined and aridity increased, with the Ghaggar-Hakra retracting its reach towards the foothills of the Himalaya,[4][220][221] leading to erratic and less extensive floods that made inundation agriculture less sustainable.

Aridification reduced the water supply enough to cause the civilisation's demise, and scatter its population eastward.[222][223][104][e] According to Giosan et al. (2012), the IVC residents did not develop irrigation capabilities, relying mainly on the seasonal monsoons leading to summer floods. As the monsoons kept shifting south, the floods grew too erratic for sustainable agricultural activities. The residents then migrated towards the Ganges basin in the east, where they established smaller villages and isolated farms. The small surplus produced in these small communities did not allow the development of trade, and the cities died out.[224][225]

Continuity and coexistence

[edit]

Archaeological excavations indicate that the decline of Harappa drove people eastward.[226] According to Possehl, after 1900 BCE the number of sites in today's India increased from 218 to 853. According to Andrew Lawler, "excavations along the Gangetic plain show that cities began to arise there starting about 1200 BCE, just a few centuries after Harappa was deserted and much earlier than once suspected."[216][ai] According to Jim Shaffer there was a continuous series of cultural developments, just as in most areas of the world. These link "the so-called two major phases of urbanisation in South Asia".[228]

At sites such as Bhagwanpura (in Haryana), archaeological excavations have discovered an overlap between the final phase of Late Harappan pottery and the earliest phase of Painted Grey Ware pottery, the latter being associated with the Vedic culture and dating from around 1200 BCE. This site provides evidence of multiple social groups occupying the same village but using different pottery and living in different types of houses: "over time the Late Harappan pottery was gradually replaced by Painted Grey ware pottery," and other cultural changes indicated by archaeology include the introduction of the horse, iron tools, and new religious practices.[102]

There is also a Harappan site called Rojdi in Rajkot district of Saurashtra. Its excavation started under an archaeological team from Gujarat State Department of Archaeology and the Museum of the University of Pennsylvania in 1982–83. In their report on archaeological excavations at Rojdi, Gregory Possehl and M.H. Raval write that although there are "obvious signs of cultural continuity" between the Harappan civilisation and later South Asian cultures, many aspects of the Harappan "sociocultural system" and "integrated civilization" were "lost forever," while the Second Urbanisation of India (beginning with the Northern Black Polished Ware culture, c. 600 BCE) "lies well outside this sociocultural environment".[229]

Post-Harappan

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Previously, scholars believed that the decline of the Harappan civilisation led to an interruption of urban life in the Indian subcontinent. However, the Indus Valley Civilisation did not disappear suddenly, and many elements of the Indus civilisation appear in later cultures. The Cemetery H culture may be the manifestation of the Late Harappan over a large area in the region of Punjab, Haryana and western Uttar Pradesh, and the Ochre Coloured Pottery culture its successor. David Gordon White cites three other mainstream scholars who "have emphatically demonstrated" that Vedic religion derives partially from the Indus Valley Civilisations.[230]

As of 2016, archaeological data suggests that the material culture classified as Late Harappan may have persisted until at least c. 1000–900 BCE and was partially contemporaneous with the Painted Grey Ware culture.[228] Harvard archaeologist Richard Meadow points to the late Harappan settlement of Pirak, which thrived continuously from 1800 BCE to the time of the invasion of Alexander the Great in 325 BCE.[216]

In the aftermath of the Indus civilisation's localisation, regional cultures emerged, to varying degrees showing the influence of the Indus civilisation. In the formerly great city of Harappa, burials have been found that correspond to a regional culture called the Cemetery H culture. At the same time, the Ochre Coloured Pottery culture expanded from Rajasthan into the Gangetic Plain. The Cemetery H culture has the earliest evidence for cremation; a practice dominant in Hinduism today.

The inhabitants of the Indus Valley Civilisation migrated from the river valleys of Indus and Ghaggar-Hakra, towards the Himalayan foothills of the Ganga-Yamuna basin.[231]

Genetics

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In 2019, a study was published by Shinde et al. on a reconstructed genome obtained from a female skeleton found in an IVC-related cemetery in Rakhigarhi, Haryana, India, dating to around 2,800–2,300 BCE.[232] The analysis suggested that the majority of the genome was closely related to Mesolithic Iranian hunter-gatherers. The remaining portion of the genome was from an indigenous East Eurasian source, termed Ancient Ancestral South Indian (AASI),[232] thought to represent indigenous South Asian hunter-gatherer ancestry.[233] The genome completely lacked the Western Steppe Herder-related ancestry that is found in modern (particularly in northern) South Asians, or any Anatolian Neolithic farmer ancestry.[232][234][235][236] The ancestry of the IVC-related individual is similar to the majority of the ancestry of modern South Asians.[233]

See also

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Notes

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References

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Bibliography

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Further reading

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Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
The Indus Valley Civilisation (IVC), also known as the Harappan Civilisation, was a Indian subcontinental urban society that flourished in the northwestern regions of the , primarily along the Indus River and its tributaries in present-day Pakistan and northwest , with approximately 2,000 sites discovered across the Indian subcontinental IVC spanning the of , , , , , , and , as well as major sites, discovered during the British India period, in what is now the Pakistani provinces of Punjab and Sindh, from approximately 3300 to 1300 BCE, early phases at sites like , Haryana, India dating to around 7500 BCE and , Haryana, India dating to around 3500 BCE during Early Harappan or Hakra phase. Indian subcontinental IVC sites spread across vast areas of the region, the northernmost being near Akhnoor in Jammu and Kashmir, India, the southernmost in Maharashtra, India, and the easternmost in Uttar Pradesh, India. Of the approximately 2,000 known sites, the majority are located in present-day India. The Indian subcontinental IVC's mature phase, spanning 2600 to 1900 BCE, is distinguished by well-planned cities such as in present-day Pakistan, first discovered in 1921 in British India; the UNESCO-listed in Pakistan with multi-storey houses, many featuring central courtyards; in Haryana, India, the largest city covering around 350 hectares and possessing a sophisticated drainage system; in Haryana, India, noted for its fortifications, barley cultivation, , beads, and pottery; in Punjab, India, yielding a steatite seal with Indus script, faience bangles, copper pins and antimony rods, terracotta animal figurines, chert blades, standardized cubical weights, and characteristic pottery such as dish-on-stand vessels and pointed-base goblets; in Rajasthan, India, with a fortified citadel, fire altars suggesting ritual practices, early -like clay ovens, and the world’s earliest attested ploughed fields; in Gujarat, India, with a citadel and organized urban layout; the UNESCO-listed in Gujarat, India, featuring advanced water reservoirs, public baths, and a signboard bearing the longest known Indus script inscription; and in Gujarat, India, home to the world’s earliest known dockyard, as well as approximately 2,000 smaller settlements, villages, and trade outposts in the northwest Indian subcontinent; featuring grid-patterned streets, multi-story baked-brick buildings, and sophisticated drainage and water management systems that indicate advanced engineering capabilities, with advanced sanitation, and trade networks extending to . The Indian subcontinental IVC employed standardized cubical weights, measures, and seals bearing the undeciphered , alongside evidence of long-distance trade in goods like carnelian beads and lapis lazuli, extending to Mesopotamia, without apparent monumental palaces or temples suggesting centralized hierarchical rule. Archaeological and genetic evidence reveals a population with ancestry primarily from ancient Zagrosian-related farmers and Ancient Ancestral South Indian, lacking genetic input from later Steppe pastoralists, challenging outdated invasion narratives in favor of indigenous developments and continuities. The society's decline after 1900 BCE correlates with empirical records of weakening monsoons, drying of the Ghaggar-Hakra river system, and resulting aridification, driving gradual eastward migrations rather than sudden catastrophe.

Discovery and Archaeological Investigation

Initial Explorations and Key Discoveries

The earliest systematic attention to sites associated with the Indus Valley Civilisation came from British archaeologist Alexander Cunningham, founder of the Archaeological Survey of India (ASI) in 1861. During visits to Harappa in 1853, 1872, and 1873, Cunningham documented the site's massive brick structures, which he compared to ancient structures mentioned by Chinese traveler Hiuen Tsang, though he underestimated their antiquity. He recovered a Harappan seal with undeciphered script during these surveys, marking one of the first artifacts linking the site to a pre-Vedic urban culture. Major excavations commenced in the 1920s under the direction of ASI Director-General Sir John Marshall. In 1921, Indian archaeologist Daya Ram Sahni led the first significant dig at Harappa, British India (now present-day Punjab, Pakistan), uncovering uniform baked bricks, pottery, and seals identical to those found earlier, indicating a sophisticated Bronze Age society. The following year, 1922, R. D. Banerji, another ASI officer, identified Mohenjo-daro, British India (now Sindh, Pakistan), after surveying mounds and recognizing architectural parallels to Harappa, including advanced drainage systems and planned streets revealed in initial probes. These sites, spanning over 250 hectares each, demonstrated urban planning with grid layouts, citadels, and standardized weights, distinguishing the civilisation from contemporaneous cultures. Marshall coordinated these efforts and, on September 20, 1924, publicly announced the discovery of a previously unknown ancient civilisation through an article in The Illustrated London News, emphasizing its independence from Mesopotamian influences based on the uniformity of artifacts across sites. Key initial finds included thousands of steatite seals bearing animal motifs and an undeciphered script, alongside terracotta figurines and copper tools, which suggested a literate, trade-oriented society dating to circa 2600–1900 BCE via associated stratigraphy. These revelations expanded the known timeline of the history of the Indian subcontinent, predating the Vedic period and highlighting indigenous urban development without evidence of palaces or temples typical of other early civilisations.

Major Excavation Sites and Methodologies

Systematic excavations of Indus Valley sites of the northwest Indian subcontinent commenced in the 1920s under the auspices of the Archaeological Survey of India, marking a shift from preliminary surveys to comprehensive stratigraphic investigations. Harappa, situated along the Ravi River in present-day Punjab, Pakistan, was the inaugural major site excavated in British India, beginning in 1921 under Dayaram Sahni with direction from John Marshall, who emphasized architectural preservation and detailed recording over artifact extraction alone. Mohenjo-daro, located in Sindh, Pakistan, followed shortly after its identification in 1922 by Rakhaldas Bandyopadhyay; large-scale digs from 1922 to 1931, supervised by Marshall and later involving Mortimer Wheeler, uncovered extensive urban remains including the Great Bath and grid-planned streets, employing manual tools like spades and brushes for layer-by-layer removal to maintain contextual integrity. Post-independence efforts expanded to additional sites, incorporating refined techniques such as aerial surveys and pottery typology for phasing. Lothal, in Gujarat, India, renowned for its putative dockyard, underwent excavation from 1955 to 1960 by S.R. Rao, revealing bead factories and a sophisticated drainage system through trench-based stratigraphic analysis. Dholavira, also in Gujarat amid the Rann of Kutch, was systematically explored over 13 seasons from 1990 to 2005 by R.S. Bisht, utilizing geophysical prospection and water management feature mapping to delineate seven phases of occupation, highlighting advanced hydraulic engineering. These methodologies prioritized horizontal exposure of city layouts, conservation of mud-brick and fired-brick structures, and integration of environmental data, though challenges like site erosion and limited undeciphered script hindered full interpretive consensus.

Recent Developments and Findings

In July 2025, archaeologists discovered a Mature Harappan settlement at Ratadia Ri Deri in Jaisalmer district, Rajasthan, marking the first confirmed Harappan site in the Thar Desert and extending the civilization's known eastern periphery toward the Indo-Pakistani border. The site, dated approximately 2600–1900 BCE through artifact typology, yielded red and buff pottery including bowls, pitchers, and perforated jars; chert blades measuring 8–10 cm; clay and shell bangles; terracotta objects; stone querns; Harappan-style bricks; and a furnace structure with a central pillar, indicating planned habitation and industrial activity adapted to arid conditions. Excavations at Lakhapar in Kachchh district, Gujarat, uncovered a 5,300-year-old Early Harappan settlement spanning about 3 hectares, dating to circa 3300 BCE and providing evidence of proto-urban transition near a former perennial river. Findings include structural remains of sandstone and shale walls, diverse pottery encompassing Early and Mature Harappan types alongside rare Pre-Prabhas Ware, a human burial accompanied by pottery, semiprecious stone beads, shell ornaments, copper and terracotta implements, Rohri chert blades, and faunal remains of cattle, sheep, goats, fish, and shellfish, suggesting mixed subsistence strategies and connections to regional necropolises like Juna Khatiya. In Pakistan's Cholistan desert, excavations resumed at Ganweriwala in February 2024 after a 47-year hiatus, targeting a site potentially 4,000–5,000 years old and larger than Harappa, though work paused in April 2024 and halted by July 2025 due to funding shortages. The efforts, led by Punjab's archaeology department with contributions from the University of Lahore for documentation and genetic analysis, aim to clarify the site's role in the Indus network amid Cholistan's ancient urban clusters. A fortified Mature Harappan settlement named Morodharo, near Lodrani village in Kutch, Gujarat, was identified in early 2024 following local reports of artifacts during informal digging, revealing structures, pottery, and burial cairns dated 2600–1300 BCE and linking to nearby Dholavira. Geospatial analysis in 2024 confirmed the ancient dockyard at Lothal, Gujarat, as a functional Harappan maritime facility (2600–1900 BCE), using satellite imagery, Digital Elevation Models, and multi-sensor data to trace over 140 paleochannels connecting the 222 m × 37 m × 4 m basin to the paleo-Sabarmati River, underscoring engineered trade links to Mesopotamia and the Persian Gulf. Research published in 2025 on Kotada Bhadli in Kutch identified it as an early caravanserai (2300–1900 BCE), featuring fortified walls, bastions, multi-roomed structures, and spaces for livestock and storage, with artifacts like copper tools, steatite and glauconite beads, marine shells, and fish bones evidencing resilient post-earthquake (circa 2200 BCE) trade infrastructure predating Silk Road analogs by millennia.

Geographical Scope and Chronological Framework

Extent, Major Settlements, and Environmental Context

The Indus Valley Civilisation encompassed a vast geographical area of approximately 1,000,000 square kilometres, primarily along the floodplains of the Indus River and its tributaries in northwest Indian subcontinent, extending from an outpost in northeastern Afghanistan through modern-day Pakistan into northwestern India, including regions of Gujarat, Rajasthan, Haryana, and Punjab. This extent represented the largest Bronze Age urban culture by area, with over 1,400 settlements identified, ranging from expansive urban centers to smaller villages. Major settlements included Mohenjo-daro and Harappa, the two largest cities, each covering around 250 hectares and supporting populations estimated at 30,000 to 40,000 inhabitants during the Mature Harappan phase (c. 2600–1900 BCE). Other prominent sites were Dholavira in Gujarat, known for its water management systems; Lothal, a port city facilitating maritime trade; Rakhigarhi in Haryana, potentially rivaling Mohenjo-daro in size; Kalibangan in Rajasthan; and Ganweriwala in Pakistan. These sites were strategically positioned near perennial rivers for irrigation and transport, with coastal outposts like Sutkagen Dor marking the western boundary near the Arabian Sea. The environmental context featured semi-arid alluvial plains sustained by the Indus River's seasonal flooding and southwest monsoon rains, which provided fertile silt for agriculture during the civilisation's peak. Stronger monsoons around 2500 BCE supported dense settlement patterns and crop cultivation of wheat, barley, and cotton, while the Ghaggar-Hakra river system (paleo-channel of the Sarasvati) hosted inland sites like Kalibangan before its aridification. Proximity to rivers minimized risks from variable rainfall, enabling urban concentration, though tectonic activity and shifting river courses influenced site locations over time.

Phases of Development and Radiocarbon Dating

The phases of the Indus Valley Civilisation are classified based on archaeological sequences from major sites, incorporating shifts in pottery typology, urban planning, and economic activities, with chronologies anchored by calibrated radiocarbon dates from organic remains such as charcoal, seeds, and bone. The primary divisions comprise the Early Harappan phase (c. 3300–2600 BCE), characterized by regional settlement expansion and proto-urban features; the Mature Harappan phase (c. 2600–1900 BCE), marked by integrated urban centers with standardized architecture and crafts; and the Late Harappan phase (c. 1900–1300 BCE), featuring deurbanization and localized cultural continuities. These phases reflect a progression from dispersed villages to centralized cities and subsequent fragmentation, with radiocarbon evidence indicating gradual rather than abrupt transitions at many sites. Radiocarbon dating, initially applied in the 1960s through conventional methods on bulk samples from Mohenjo-daro, provided early estimates placing the site's occupation between approximately 2500 and 1700 BCE, though prone to the "old wood effect" from long-lived trees. Subsequent accelerator mass spectrometry (AMS) dating of short-lived materials during excavations at Harappa (1986–1996) yielded over 70 calibrated dates, confirming the Mature phase span of 2600–1900 BCE and highlighting overlaps with preceding and succeeding periods. For the Early Harappan phase, AMS dates from sites like Kot Diji (Pakistan), Rehman Dheri (Pakistan), Bhirrana (India), Banawali (India), and Farmana (India) support initiation around 3300 BCE, with evidence of early fortified settlements and ceramic innovations preceding full urbanism. In the Mature phase, radiocarbon assays from stratified contexts at Harappa (Pakistan), Mohenjo-daro (Pakistan), Dholavira (India), Kalibangan (India), Lothal (India), Rakhigarhi (India), Rupnagar (India), Surkotada (India) consistently calibrate to 2600–1900 BCE, aligning with peak urban development and long-distance trade inferred from artifact associations. Late Harappan dates, from sites such as Bhagatrav and Kuntasi, range from 2400–1700 BCE in transitional layers, indicating persistence of Harappan traits amid environmental shifts and reduced site sizes. Recent analyses, including those from 2024–2025, refine peripheral chronologies—such as Sorath Harappan occupations—but uphold the core timeline, with calibrations using updated curves like IntCal20 minimizing discrepancies. Regional variations persist, as dates from Gujarat sites show extended Mature phase activity into the early second millennium BCE, underscoring asynchronous decline.
PhaseCalibrated Date Range (BCE)Key Sites with Radiocarbon SupportNotable Features Supported by Dating
Early Harappan3300–2600Kot Diji (Pakistan), Rehman Dheri (Pakistan), Bhirrana (India), Banawali (India), Farmana (India)Proto-urban settlements, early pottery standardization
Mature Harappan2600–1900Harappa (Pakistan), Mohenjo-daro (Pakistan), Dholavira (India), Kalibangan (India), Lothal (India), Rakhigarhi (India), Rupnagar (India), Surkotada (India)Urban grid planning, drainage system, uniform weights and measures
Late Harappan1900–1300Alamgirpur (India), Bhagatrav (India), Bhagwanpura (India), Daimabad (India), Desalpur (India), Kuntasi (India), Rangpur (India)Cemetery H culture, painted grey ware influences

Origins and Early Foundations

Neolithic Precursors: Mehrgarh and Regional Roots

Mehrgarh, situated in the Kacchi Plain of Balochistan, Pakistan, stands as a pivotal Neolithic settlement providing foundational evidence for early farming communities in the northwest Indian subcontinent. Excavations led by French archaeologist Jean-François Jarrige from 1974 to 1986, with additional work in the late 1990s, uncovered multiple mounds yielding artifacts spanning Neolithic to Chalcolithic periods. Recent radiocarbon analysis of human tooth enamel from Period I deposits has dated the aceramic Neolithic phase to approximately 5200–4900 BCE, indicating a later onset of sedentary agricultural life than previously estimated at 7000 BCE or earlier based on older charcoal dates prone to contamination. This revision aligns with the appearance of mud-brick structures, including rectangular houses clustered in small villages, and rudimentary granaries, marking a shift from hunter-gatherer patterns to domestication-dependent subsistence. Key archaeological finds at Mehrgarh include evidence of early crop cultivation, with domesticated emmer wheat, barley, and possibly dates, alongside animal husbandry of humped zebu cattle, sheep, and goats, reflecting adaptive strategies to the arid highland environment. Artifacts such as polished stone tools, bone implements, and early basketry underscore technological continuity, while the absence of pottery in the initial aceramic phase—emerging only around 4650 BCE in Period IIA—suggests a gradual cultural evolution rather than abrupt innovation. These elements indicate self-sustaining communities reliant on floodwater farming and pastoralism, with limited evidence of external influences beyond possible diffusion from the Zagros region via overland routes. The site's significance as a precursor to the Indus Valley Civilisation lies in demonstrable continuities into the Early Harappan phase (circa 3300–2600 BCE), including mud-brick construction techniques, similar pottery motifs like incised designs on later ceramics, and shared subsistence bases of wheat-barley agriculture and cattle herding. Skeletal analyses reveal morphological affinities between Mehrgarh inhabitants and later Harappan populations, supporting biological and cultural lineage rather than wholesale replacement. Trade interactions, evidenced by shared artifact styles with contemporaneous sites like Mundigak in Afghanistan, facilitated the integration of Mehrgarh's traditions into broader proto-urban networks, evolving Balochistan from an autonomous Neolithic hub into a peripheral zone of Harappan influence by the Chalcolithic era. Beyond Mehrgarh, regional Neolithic roots in the greater Indus domain include sparse settlements in adjacent areas, such as highland sites in southern Afghanistan and early aceramic occupations in Rajasthan's arid zones, which exhibit parallel domestication of local flora and fauna but lack the scale of Mehrgarh's continuity. These dispersed communities, potentially influenced by westward migrations carrying Near Eastern farming packages, adapted to monsoon-dependent ecologies, laying groundwork for the expansive settlement patterns of the Early Harappan without direct urban precursors. Empirical data from regional surveys highlight a mosaic of indigenous developments, with Mehrgarh's prominence stemming from its stratigraphic depth and artifact density rather than isolation from these broader ecological adaptations.

Transition to Proto-Urbanism

The transition to proto-urbanism occurred during the Early Harappan phase, approximately 3300–2600 BCE, bridging Neolithic village life with the urban maturity of later periods through gradual settlement aggregation and technological refinement. Archaeological evidence from sites like Harappa indicates early occupations dating to around 3500 BCE, featuring pottery akin to regional Early Harappan styles and supporting a diverse economy based on flood-plain agriculture, pastoralism, and resource exploitation. This phase encompassed sub-regional variants, such as the Ravi phase in the northern plains and the Kot Diji phase in Sindh, marked by increasing site densities and sizes up to 20 hectares, fostering interconnected village networks. Proto-urban characteristics emerged prominently at fortified settlements like Kot Diji, where mud-brick citadels with walls up to 10 meters high enclosed elite or administrative areas, signaling centralized authority and defensive priorities absent in prior Neolithic contexts. Excavations at Harappa's Kot Diji layers (c. 2800–2600 BCE) uncovered extensive deposits with standardized red pottery, incised designs, terracotta bangles produced in specialized kilns, and early copper implements, reflecting craft specialization and inter-regional exchange of materials like chert from the Rohri hills. Similar developments at Amri, Kalibangan, and Balakot included plowed fields evidencing irrigation, wheel-turned ceramics, and bead workshops, which intensified surplus production to sustain growing populations. Economic and social integration advanced via proto-trade in exotic goods such as lapis lazuli and carnelian, alongside the appearance of cubical weights and incised symbols on pottery—precursors to the Mature Harappan's script and metrology—indicating administrative needs for accounting and exchange regulation. These innovations, rooted in local Neolithic traditions like Mehrgarh's farming and metallurgy, drove population growth without evidence of external disruption, as radiocarbon dates confirm continuity in material culture across phases. By 2600 BCE, these proto-urban traits coalesced into the standardized urbanism of the Mature phase, with sites transitioning to baked-brick architecture and grid planning.

Early Harappan Phase

Settlement Expansion and Technological Innovations

The Early Harappan phase, dated approximately 3300–2600 BCE, marked a period of notable settlement proliferation in the Indus plains and adjacent regions, transitioning from dispersed Neolithic villages to denser clusters of proto-urban communities. Archaeological assessments indicate a substantial increase in site density, with one analysis of 343 surveyed locations classifying 207 as Early Harappan, reflecting expanded occupation along floodplains conducive to irrigation-based farming. Prominent sites such as Harappa (Ravi phase), Kot Diji, Amri, and Kalibangan exemplify this growth, featuring larger enclosures, fortified structures at select locales, and evidence of surplus storage, which supported population aggregation and nascent hierarchies. This dispersal extended eastward to Haryana and southward to Gujarat, driven by climatic stability and riverine resources that enabled sustained habitation beyond seasonal camps. Technological progress in this era laid foundational efficiencies for later phases, including the adoption of the potter's wheel for ceramic production, evidenced by wheel-thrown vessels at Harappa and sites like Lohari Ragho I, which standardized forms and reduced labor intensity compared to coiling methods. Metallurgical practices advanced with copper smelting and alloying, yielding tools and implements from the Ravi phase onward, as confirmed by compositional analyses of artifacts indicating arsenical copper usage for durability in agriculture and crafting. Complementary innovations encompassed mud-brick architecture for resilient housing and early bead production techniques, fostering craft specialization and exchange networks that integrated raw materials like carnelian from distant quarries. These developments, rooted in iterative adaptations to environmental and subsistence demands, enhanced productivity without evidence of centralized coercion.

Subsistence and Social Organization

The subsistence economy of the Early Harappan phase (c. 3300–2600 BCE) relied primarily on rain-fed agriculture, with barley as the dominant crop at sites such as those in the Ghaggar-Hakra system, supplemented by wheat and possibly early forms of cotton cultivation derived from Neolithic precedents. Domesticated animals, including humped cattle (Bos indicus), sheep, goats, and water buffalo, provided secondary resources through husbandry, with evidence from faunal remains at sites like Kanmer indicating a higher utilization of bovines for meat and dairy compared to later phases. Pastoralism complemented farming, enabling mobility and risk diversification in the semi-arid alluvial plains, though irrigation features remained rudimentary absent the advanced systems of the Mature phase. Social organization exhibited emerging complexity without pronounced stratification, as inferred from settlement hierarchies where larger villages (2.3–3 hectares) like Masudpur III, V, VIII, and XI in Haryana suggest localized leadership or resource control, yet lacked monumental architecture, elite burials, or palaces indicative of centralized authority. Family-based craft specialization, evident in consistent tool assemblages across sites, points to kin-group cooperation rather than rigid class divisions, fostering resilience in a proto-urban context transitioning from Neolithic villages. This structure likely prioritized communal resource management, with no archaeological signs of militarized elites or vast inequalities, contrasting with contemporaneous Mesopotamian polities.

Mature Harappan Phase

Urban Centers, Architecture, and Infrastructure

The major urban centers of the Mature Harappan phase (2600–1900 BCE) included Harappa and Mohenjo-daro in present-day Pakistan, as well as Dholavira, Rakhigarhi, Kalibangan, and Lothal in present-day India, among over 1,000 identified settlements. Harappa covered approximately 150 hectares and supported an estimated population of 23,500 residents, while Mohenjo-daro, established around 2600 BCE, emerged as the largest city with advanced organizational features evident from excavations conducted since the 1920s. These centers typically featured a divided layout with an elevated citadel area for public structures and a lower town for residential zones, reflecting deliberate urban planning without evident palaces or monumental temples. Architecture relied on standardized fire-baked bricks, which were moisture-resistant and used primarily for walls and floors exposed to water, enabling construction in flood-prone regions. Bricks followed a consistent 4:2:1 ratio for length, width, and height, with uniform dimensions such as 28 × 14 × 7 centimeters in some cases, facilitating modular building across sites. Houses consisted of multi-room structures with flat roofs made of red sand and clay, inner courtyards, and private bathrooms, often opening onto smaller lanes rather than main streets for privacy. Notable public edifices included the Great Bath at Mohenjo-daro, a large waterproofed pool measuring about 12 × 7 meters and 2.4 meters deep, constructed with baked bricks and gypsum mortar, likely serving communal functions. Granaries and assembly halls, as seen at Harappa, Dholavira, Lothal, Kalibangan, Rakhigarhi and Mohenjo-daro, featured raised platforms and ventilation systems for storage. Infrastructure emphasized sanitation and water management through grid-patterned streets oriented north-south and east-west, with main avenues up to 10 meters wide and narrower side streets. Covered drains lined with baked bricks ran along major thoroughfares, connecting directly to household waste outlets via terracotta pipes and chutes, directing wastewater to larger sewers or soak pits via gravity flow. Water supply derived from numerous wells, both private in residences and public in streets, constructed with brick linings reaching groundwater levels. At Lothal, a dockyard integrated with tidal channels supported maritime activities, complemented by similar drainage networks. This standardized approach to construction and utilities, evidenced by uniform brickwork and interconnected systems across distant sites, indicates centralized technical knowledge and administrative coordination rather than local improvisation.

Economic Systems: Agriculture, Crafts, and Metallurgy

The economy of the Indus Valley Civilisation relied heavily on agriculture, supported by the fertile alluvial plains of the Indus River system and monsoon rains. Principal crops included wheat (Triticum aestivum and Triticum durum), barley (Hordeum vulgare), peas (Pisum sativum), lentils (Lens culinaris), and chickpeas (Cicer arietinum), as evidenced by charred seeds recovered from sites such as Harappa, Rakhigarhi, Lothal, and Mohenjo-daro. Additional cultigens encompassed sesame (Sesamum indicum), mustard (Brassica juncea), cotton (Gossypium arboreum, domesticated in the region around 5000 BCE), dates, and melons, with phytolith and macrobotanical remains indicating organized crop processing at small settlements like those in Gujarat. Agricultural practices involved flood irrigation from river inundations, supplemented by wells and possible canal systems, as inferred from terracotta models and sediment analysis, enabling surplus production that underpinned urban growth during the Mature Phase (2600–1900 BCE). Crafts production exhibited high specialization and standardization, reflecting organized workshops and division of labor. Bead-making was prominent, utilizing materials such as carnelian, agate, steatite, turquoise, and lapis lazuli, with artifacts from Mohenjo-daro showing advanced techniques like alkali-etching for etching and diamond drilling for long carnelian beads up to 5 cm in length. Pottery was wheel-thrown, featuring painted motifs on buff ware and black-slipped varieties, with uniform shapes for storage jars and cooking vessels found across sites, indicating mass production. Other crafts included shell-working for bangles from the Arabian Sea and ivory carving for combs and figurines, while cubical chert weights (progressing in binary multiples from 0.05g to 20kg) ensured precise measurement in trade and crafts, unearthed in standardized sets at urban centers. Metallurgy focused on copper and arsenical bronze, with artifacts comprising tools, ornaments, and vessels recovered from nearly every excavated site. Copper sources likely included Rajasthan deposits and possibly Oman imports, as trace element analysis of Harappan artifacts shows matching impurities. Techniques involved hammering sheet metal for vessels and lost-wax casting for intricate items like fishhooks and figurines, with bronze alloys containing 1–10% tin or arsenic for hardness, evidenced by over 300 copper-base objects from Harappa alone. Absent are large-scale weapons, suggesting utilitarian rather than militaristic use, with no evidence of ironworking during the civilisation's span.

Trade, Transportation, and External Contacts

The Indus Valley Civilization maintained a sophisticated internal trade system evidenced by standardized cubical weights made of chert, ranging from less than 1 gram to over 10 kilograms, following a binary progression (powers of 2) up to 12.8 kg with decimal multiples thereafter, which facilitated precise measurement across sites like Mohenjo-daro and Harappa. These weights, found in nearly identical forms at multiple urban centers, indicate centralized regulation of commerce, enabling exchange of goods such as carnelian beads, textiles, and metals without reliance on perishable barter media. Seals, often depicting animals and inscribed with script, likely served administrative functions in verifying transactions, with over 3,000 recovered, underscoring bureaucratic oversight of economic activities. Transportation infrastructure supported this commerce through land and water routes. Wheeled vehicles, including bullock-pulled carts depicted in terracotta models from sites like Harappa, represent early adoption of wheel technology for bulk goods overland, with evidence from axle and wheel fragments dated to 2600–1900 BCE. Riverine and coastal navigation utilized flat-bottomed boats, inferred from seal motifs and a terracotta bull-shaped vessel model from Kot Diji (2800–2600 BCE), suitable for Indus River currents and short-sea voyages. The port at Lothal featured an artificial dockyard basin, approximately 214 by 36 meters, connected to an ancient Sabarmati River course, with stone anchors indicating maritime docking for larger vessels around 2400 BCE. External contacts extended to Mesopotamia, Central Asia, and the Persian Gulf, primarily through maritime routes via Lothal and coastal sites. Indus seals bearing unicorn motifs and script have been excavated at Mesopotamian sites like Ur and Kish, dating to 2500–2000 BCE, confirming direct or intermediary exchange. Mesopotamian cuneiform texts reference "Meluhha" as a source of ivory, carnelian, and exotic woods, aligning with Indus exports, while imports included lapis lazuli from Badakhshan (Afghanistan) via Central Asian overland paths and turquoise from northeastern Iran. Carnelian beads and etched stoneware, hallmarks of Indus craftsmanship, appear in Dilmun (Bahrain) and Magan (Oman) contexts, evidencing Gulf entrepôts facilitating tin and copper inflows essential for bronze production. These networks peaked during the Mature Harappan phase (2600–1900 BCE), with artifact distributions suggesting episodic rather than continuous ties, driven by resource complementarity rather than cultural assimilation.

Governance, Authority, and Social Stratification

Archaeological evidence from major Indian subcontinental Indus Valley sites such as Mohenjo-daro, Dholavira, Rakhigarhi, Kalibangan, Lothal, and Harappa reveals no palaces, royal tombs, or monumental structures indicative of divine kingship or centralized monarchical authority comparable to contemporary Mesopotamian or Egyptian civilizations. This absence suggests that governance may have operated through decentralized mechanisms, possibly involving councils of merchants, priests, or administrators rather than hereditary rulers. Uniform urban planning, standardized brick sizes, and extensive drainage systems across distant sites imply effective coordination, potentially enforced by a federation or shared administrative protocols without a single overriding authority. The "Priest-King" statue from Mohenjo-daro, depicting a bearded figure in a trefoil-patterned robe with a headband, has been interpreted by some as evidence of a theocratic elite or ritual leader exerting symbolic authority, though its precise role remains speculative and unconfirmed by inscriptions or contextual artifacts. Seals bearing motifs of composite animals or yogic figures may represent administrative or ideological control, but lack depictions of warfare, conquest, or royal insignia, contrasting with militaristic iconography in other Bronze Age societies. No evidence of armies, prisons, or slave quarters has been uncovered, supporting theories of non-coercive governance reliant on trade networks and collective labor mobilization. Social stratification appears relatively flat, with most residential structures exhibiting functional uniformity in size and quality, few luxury goods differentiating burials, and skeletal analyses showing comparable health outcomes across populations. However, variations exist: larger houses in elite quarters of Mohenjo-daro, specialized craft areas like bead-making workshops, and access-restricted structures suggest emergent hierarchies based on economic specialization or administrative roles rather than rigid castes or inherited nobility. This moderate differentiation challenges purely egalitarian models, indicating a heterarchical system where authority derived from expertise in trade, ritual, or resource management, enabling complex urbanism without extreme inequality. Scholarly debate persists, with some attributing the lack of overt elites to cultural practices de-emphasizing individual power, while others caution that preservation biases or interpretive frameworks may understate subtle power structures.

Arts, Crafts, Seals, and Material Culture

The arts and crafts of the Mature Harappan phase (2600–1900 BCE) demonstrate sophisticated techniques in sculpture, seal-carving, and artifact production, reflecting a culture emphasizing standardization and functionality alongside aesthetic expression. Artifacts include bronze and stone figurines, terracotta models, and precisely crafted seals, often featuring animal motifs and an undeciphered script. These items, excavated primarily from urban centers like Mohenjo-daro and Harappa, indicate specialized workshops and trade in materials such as steatite, carnelian, and chert. Stamp seals, numbering around two thousand examples, were typically fashioned from steatite and incised using copper tools, serving probable administrative or trade functions through impressions denoting ownership or emblems. Common motifs include real animals like bulls and elephants, alongside a mythical "unicorn" appearing on the majority of seals, accompanied by short inscriptions in the Indus script. These seals' uniformity suggests centralized control over symbolic systems, potentially linked to commerce or ritual authority. Sculptural works, though limited in number, showcase advanced lost-wax casting in bronze and carving in stone or steatite. The "Dancing Girl" bronze figurine from Mohenjo-daro, approximately 10.8 cm tall and dated to circa 2500 BCE, depicts a nude female in a contrapposto pose with intricate jewelry and hairstyle, evidencing technical prowess in metalworking. Similarly, the "Priest-King" steatite bust, 17.5 cm high from the same site and dated 2400–1900 BCE, features a bearded figure with a headband and trefoil-patterned robe, interpreted by some as denoting elite status though its exact role remains speculative. A limestone male torso, 9.9 cm tall, captures dynamic movement suggestive of dance. Crafts extended to pottery with painted designs, terracotta figurines of humans and animals, and toys such as wheeled carts and nod-headed cattle, indicating playful yet standardized production. Bead-making involved drilling carnelian for long, etched varieties, while cubical chert weights adhered to a binary progression (1, 2, 4, 8, etc., up to 12,800 units), underscoring metrological precision across the civilization's extent. These elements collectively highlight a material culture geared toward utility, trade, and subtle symbolic communication rather than monumental art.

Script, Language, and Symbolic Systems

The Indus script consists of approximately 400 to 600 distinct signs, with over 5,000 inscriptions identified across seals, pottery, tablets, and other artifacts from Mature Harappan sites. These inscriptions are predominantly short, averaging five signs in length, with the longest known example containing 34 signs, limiting structural analysis. The script appears on stamp seals most frequently, often alongside animal or humanoid motifs, and exhibits a preferred direction from right to left, though some instances suggest boustrophedon reading. Statistical analyses indicate conditional entropy patterns akin to natural languages, supporting the view that it encodes linguistic information rather than purely numerical or symbolic notations. Despite numerous decipherment attempts since the 19th century, the script remains undeciphered as of 2025, due to the absence of bilingual texts, the brevity of inscriptions, and the lack of identifiable proper names or repeated syntactic patterns. Claims of partial or full decipherments, such as those proposing Sanskrit or other Indo-European roots, have been critiqued for methodological flaws, including confirmation bias and incompatibility with archaeological timelines, as the Indus Valley Civilization predates the arrival of Indo-Aryan languages in the region by over a millennium. Computational approaches, including machine learning models trained on sign frequencies and positional data, have explored logosyllabic or alphabetic structures but yielded no consensus translation. Hypotheses on the underlying language favor non-Indo-European families, with evidence pointing toward an ancestral Dravidian substrate based on linguistic reconstructions of place names, loanwords in early Vedic Sanskrit (e.g., terms for flora and fauna like pīlu for millet), and genetic continuity between Indus populations and modern South Indian Dravidian speakers. The absence of inflectional affixes or complex morphology in the script aligns poorly with Indo-European grammar, further weakening Aryan language proposals. Alternative theories suggest it may represent a lost isolate or Austroasiatic elements, though Dravidian remains the most empirically supported due to substrate influences in later Indian subcontinental linguistics. Beyond the script, Indus symbolic systems feature recurrent motifs on seals, including the "unicorn" (a single-horned bovine-like creature in over 50% of examples), humped bulls, elephants, and composite human-animal figures, interpreted as totemic emblems for clans, trade guilds, or administrative units rather than deities. Seals, crafted from steatite and fired for durability, likely served administrative functions such as marking ownership, authenticating transactions, or sealing goods in long-distance trade, evidenced by impressions on clay tags from Mesopotamian parallels. Humanoid depictions, like the "priest-king" statue's trefoil robe echoed in seal iconography, suggest symbolic roles in authority or ritual, but without deciphered text, interpretations remain inferential from context and comparative iconography. These elements indicate a standardized system of visual communication integrating script and imagery for economic and social coordination across the civilization's urban network.

Religion, Ideology, and Ritual Practices

Archaeological evidence for religion in the Indus Valley Civilization (IVC) is sparse and interpretive, with no monumental temples, palaces, or priestly complexes identified across major sites like Mohenjo-daro, Dholavira, Rakhigarhi, Kalibangan, Lothal, and Harappa, distinguishing it from contemporaneous Mesopotamian cultures that featured prominent religious architecture. This absence suggests that any religious or ideological practices were likely decentralized, possibly integrated into domestic or communal spaces rather than centralized institutions. Steatite seals, numbering in the thousands, provide the primary iconographic clues, featuring motifs such as animals (e.g., bulls, elephants, tigers), composite creatures, and human-like figures in yogic postures, but their religious significance remains debated due to the undeciphered script and lack of contextual texts. The so-called "Pashupati" seal from Mohenjo-daro, depicting a horned figure surrounded by animals in a possible yogic pose, was interpreted by John Marshall in 1931 as a proto-Shiva or lord of animals, but subsequent scholarship criticizes this as overly speculative, noting the figure's three faces may represent a composite beast or shamanic motif rather than a deity, with no corroborating evidence for Shaivite continuity. Similarly, terracotta female figurines, often cited as mother goddesses, are now viewed by archaeologists like Sharri Clark as likely votive objects, toys, or apotropaic figures rather than evidence of a dominant fertility cult, given their crude manufacture and domestic contexts. Ritual practices are inferred from structures like the Great Bath at Mohenjo-daro, potentially used for purification rites based on its waterproof brickwork and steps, though its communal function could equally relate to hygiene in an urban setting without invoking religion. Fire altars, consisting of mud-brick platforms with ash and charred remains, appear at Kalibangan in rows of seven and at Lothal, suggesting possible sacrificial or offerings rituals, as animal bones and antlers were found nearby, but parallels to later Vedic practices are anachronistic given IVC's timeline predating Indo-Aryan arrivals. Burials exhibit variation, including complete interments in north-south oriented graves with grave goods like pottery and beads at Harappa, fractional burials reducing bodies to bones at Mohenjo-daro, and urn burials at Lothal, indicating diverse mortuary ideologies possibly tied to ancestor veneration or secondary rites, but no widespread evidence of human sacrifice or elaborate funerary cults. Symbols like the swastika on seals and pottery hint at ideological motifs shared with later traditions, but without textual support, they likely represented clan totems or auspicious signs rather than organized doctrine. Overall, Indian subcontinental IVC ideology appears pragmatic and non-theocratic, prioritizing empirical urban planning over overt ritual display, with any spiritual elements rooted in animistic or ecological concerns evidenced by animal-centric iconography.

Late Harappan Phase and Decline

Cultural Shifts and Regional Variations

The Late Harappan phase, spanning approximately 1900–1300 BCE, witnessed a marked deurbanization, with major centers like Mohenjo-daro and Harappa experiencing abandonment or significant downsizing, as populations dispersed into smaller rural settlements and villages. This shift entailed a decline in craft specialization, architectural uniformity, and long-distance trade networks, evidenced by reduced imports of materials such as lapis lazuli and marine shells, alongside the rarity of standardized weights and the Indus script. Pottery styles evolved with regional painted motifs and coarser fabrics replacing the fine, standardized Mature Harappan wares, while burial practices diversified, incorporating pot burials and ochre-painted vessels that suggest ideological adaptations among elites. These changes were not uniform, varying in pace and intensity across regions due to local environmental and subsistence pressures, with over 500 Late Harappan sites documented in India alone indicating persistence rather than abrupt collapse. In the northern Indus region, particularly Punjab and extending to the Ganga-Yamuna Doab, the Cemetery H culture emerged around 1900–1700 BCE, characterized by a three-tier settlement hierarchy of small villages, larger towns, and residual urban remnants at Harappa. Burials in Cemetery H featured extended inhumations in north-south oriented pits, accompanied by coarse red ware pottery with black slip designs, copper ornaments, and shell bangles, but lacking high-value grave goods typical of earlier phases. This variant maintained some Harappan elements like bead production but showed innovations in elite pottery inclusions, reflecting localized social differentiation amid broader fragmentation. Southern regions in Sindh, including sites overlying Mature Harappan occupations at Mohenjo-daro and Chanhu Daro, developed the Jhukar culture from circa 1900–1700 BCE, marked by black-on-red or cream slip pottery with geometric patterns and circular stamp seals distinct from Indus unicorn motifs. Unlike northern counterparts, Jhukar phases lacked evidence of Indus script, cubical weights, or large-scale brick architecture, indicating a contraction in administrative standardization and trade, though bead-making and basic ceramics persisted. In Gujarat and Saurashtra, Late Harappan manifestations included the Rangpur IIC phase and Sorath Harappan variant, alongside the Lustrous Red Ware culture extending to about 1400 BCE, featuring micaceous red-slipped pottery and small, dispersed settlements without major urban centers. These southern adaptations showed continuity in crafts like carnelian bead production at sites such as Lothal but with altered vessel forms and reduced monumental infrastructure, adapting to coastal and inland ecological niches. Further east in Baluchistan, the Pirak site (circa 1700–700 BCE) introduced elements like horse and camel figurines alongside rice cultivation, hinting at semi-nomadic influences blending with residual Harappan traits.

Environmental Changes and Climate Impacts

During the Late Harappan phase (c. 1900–1300 BCE), the Indus Valley Civilization experienced significant environmental shifts characterized by aridification and reduced monsoon precipitation, contributing to deurbanization and population dispersal. Sediment core analyses from the region indicate a gradual decline in summer monsoon intensity beginning around 2500 BCE, with intensified droughts by 1900 BCE that disrupted riverine ecosystems and agricultural productivity. This weakening, evidenced by oxygen isotope ratios in stalagmites from Indian caves and pollen records showing decreased vegetation cover, shifted settlement patterns eastward toward the Ganges plain, where monsoon rains remained more reliable. A key factor was the desiccation of the Ghaggar-Hakra river system (paleo-Sarasvati), which transitioned from perennial flow to seasonal by approximately 1900 BCE due to eastward monsoon migration and reduced Himalayan glacial meltwater. Geological surveys and radiocarbon-dated sediment layers reveal that tectonic shifts, including the diversion of tributaries like the Yamuna away from the Ghaggar-Hakra basin around 4000–2000 BCE, compounded by precipitation deficits, led to channel abandonment and aeolian sand deposition. Major Harappan sites along this river, such as Kalibangan and Banawali, show stratigraphic evidence of abandonment coinciding with these hydrological changes, forcing reliance on rain-fed farming and smaller, dispersed villages. The 4.2 kiloyear aridification event (c. 2200 BCE), a global megadrought marked by suppressed South Asian monsoons, likely exacerbated vulnerabilities but preceded the primary phase of urban decline by centuries, as Mature Harappan cities persisted with adaptive measures like crop diversification to millet. Prolonged summer and winter droughts from 4.2–3.97 ka BP, inferred from Arabian Sea core data, intensified soil degradation and flood scarcity, undermining the irrigation-dependent economy that supported megacities like Mohenjo-daro and Harappa. Archaeological indicators, including reduced site sizes and increased pastoralism in post-urban phases, correlate with these climatic stressors rather than isolated catastrophes. While internal factors like overexploitation may have amplified effects, paleoclimate reconstructions prioritize monsoon variability as the dominant causal driver of systemic transformation.

Alternative Theories of Collapse

The invasion hypothesis, initially proposed by archaeologist Mortimer Wheeler in 1953, posited that nomadic Indo-European speakers, identified as Aryans originating from Central Asia, overran and destroyed Indus cities around 1500 BCE, leading to societal collapse. This theory drew on interpretations of skeletal remains showing trauma at sites like Mohenjo-daro and Rigvedic texts referencing conflicts with fortified cities, but it has been widely rejected due to chronological mismatches—the Mature Harappan phase declined by 1900 BCE, predating proposed Aryan arrivals—and absence of widespread destruction layers, horse/chariot remains, or mass graves indicative of conquest. Only about 37 skeletons across major sites exhibit injuries over centuries, consistent with sporadic local violence rather than systematic invasion, and urban decay evidenced by poor maintenance predates any external disruption. Socio-economic decline theories emphasize internal factors such as overexploitation of resources and breakdown of trade networks with Mesopotamia and Egypt around 1800 BCE, which may have strained the civilization's standardized economy reliant on long-distance exchange of goods like carnelian beads and cotton textiles. Proponents argue that reduced trade volumes, inferred from decreased Mesopotamian records of Meluhha (Indus-related) imports after 1900 BCE, combined with potential soil salinization from intensive irrigation, eroded agricultural surpluses supporting urban centers, prompting gradual deurbanization without climatic primacy. However, these explanations lack direct stratigraphic or palynological evidence linking trade disruptions causally to collapse, as artifact continuity in successor cultures suggests adaptation rather than abrupt failure, and resource strain models often conflate with environmental data. Other proposals invoke tectonic events or floods as triggers for infrastructural failure, citing seismic faults near sites like Dholavira and Kalibangan where shifted foundations and silt layers appear post-2000 BCE, potentially disrupting drainage systems and water management. Yet, radiocarbon-dated sequences indicate these disturbances were episodic and localized, not synchronous across the 1.5 million km² civilization, failing to explain the uniform shift to rural Cemetery H and Late Harappan patterns by 1700 BCE. Disease epidemics have been speculated based on urban density, but no paleopathological evidence of pandemics, such as mass burials or pathogen residues in remains, supports this, contrasting with clearer dietary stress indicators like increased millet consumption in later phases. Overall, these alternatives persist in debate but remain subsidiary to multifaceted evidence favoring integrated ecological and adaptive processes over singular catastrophic agents.

Post-Harappan Developments

Successor Cultures and Regional Continuities

Following the decline of the Mature Harappan phase around 1900 BCE, the Indus Valley Civilization transitioned into the Late Harappan phase (c. 1900–1300 BCE), characterized by deurbanization, reduced settlement sizes, and the emergence of regionally distinct cultures that preserved select elements of earlier Harappan material traditions while adapting to localized environmental and economic conditions. These successor phases reflect a fragmentation of the previously integrated urban network, with evidence of continued agrarian practices, herding, and craft production such as ceramics and bead-making, but marked by the absence of standardized weights, seals, and script, alongside diminished long-distance trade in marine shells and semiprecious stones. Archaeological data from sites across the Indus plains, Gujarat, and Punjab indicate that while major centers like Harappa, Rakhigarhi, Dholavira, Kalibangan, Lothal, and Mohenjo-daro were largely abandoned or downsized, peripheral and core regions sustained cultural mosaics through internal transformations rather than external disruptions. Prominent among these successor cultures is the Cemetery H phase in the Punjab region (northern Pakistan and adjacent India), spanning c. 1900–1300 BCE and named after the distinctive cemetery at Harappa featuring pot burials and rectangular graves with ochre-painted pottery. This culture maintained a tiered settlement hierarchy with three or four levels of sites, including smaller villages and fortified mounds, alongside painted pottery bearing black designs on red slip, reflecting partial continuity from Harappan ceramic traditions but with innovations in burial rites and reduced access to coastal resources. In southern Sindh, the Jhukar phase (c. 1900–1700 BCE) succeeded Harappan occupations at sites like Chanhudaro and Jhukar, featuring black-painted pottery on red or cream slips, geometric stamp seals, and localized exchange networks, though lacking Indus script and chert weights; this phase represents a devolved, arid-adapted variant with simpler artifacts and no evidence of northern trade links post-1700 BCE. Further east in Gujarat, the Rangpur phase (c. 1900–1400 BCE) at sites like Rangpur and Lothal exhibited Lustrous Red Ware and Black-and-Red Ware pottery, alongside persistent ornament styles such as etched carnelian beads, but shifted to dispersed rural settlements emphasizing pastoralism and local Chalcolithic innovations, bridging Harappan elements into later regional traditions. Regional continuities are evident in the retention of core technologies and subsistence strategies across these cultures, including higher-temperature kilns for ceramics, early glass bead production, and metallurgical techniques for copper-bronze tools, which persisted amid the breakdown of centralized administration and urban uniformity. For instance, pottery forms and firing methods in Jhukar and Rangpur echo Harappan precedents, while Cemetery H sites show overlaps in faunal remains indicative of mixed farming-herding economies, suggesting endogenous adaptations to climate shifts and resource scarcity rather than wholesale cultural replacement. These localized developments, spanning from Sindh to Gujarat, underscore a gradual localization era where Harappan influences diffused into subsequent Chalcolithic assemblages, with no archaeological indicators of mass invasion or sharp discontinuity until later phases around 1300 BCE.

Integration with Later Indian Subcontinental Societies

The Late Harappan phase, spanning approximately 1900–1300 BCE, marked a transition from urban uniformity to regionalized cultures with partial continuities in material practices, as urban centers decentralized into smaller settlements while retaining elements of farming, herding, ceramics, and crafts like bead-making and metallurgy. In the Punjab and Ganga-Yamuna Doab, the Cemetery H culture featured painted pottery with black-on-red designs and a three-to-four-tier settlement hierarchy, alongside innovations in faience and glass beads, but without Indus script or chert weights, indicating localized adaptations amid declining long-distance trade. Similarly, the Jhukar culture in southern Sindh (1900–1700 BCE) persisted with black-painted pottery on red or cream slips and geometric stamp seals, evolving directly from Harappan traditions before site abandonments around 1700 BCE. In Gujarat and Saurashtra, post-Harappan Lustrous Red Ware settlements remained dispersed without large centers, preserving some pottery and ornament styles into the 1400s BCE, alongside continued subsistence economies based on domestic cattle, sheep, goats, and crops. These regional phases integrated Indus technologies, such as higher-temperature kilns for ceramics, into smaller polities or chiefdoms, with no archaeological signs of violent invasion or abrupt collapse, suggesting gradual environmental and economic pressures drove deurbanization and eastward population shifts toward the Ganga plain. Overlaps at sites like Bhagwanpura demonstrate coexistence of Late Harappan and Painted Grey Ware (PGW) elements around 1200–800 BCE, the latter linked to early Vedic societies through two-to-three-tier settlements, possible ritual altars with fired bricks, and horse remains, implying interaction between Indus remnants and emerging Indo-Aryan groups in the Indo-Gangetic region. Linguistic integration posits proto-Dravidian speech in the Indian subcontinental IVC, evidenced by ultraconserved terms like *pal/*pīl for "tooth" (extended to ivory and toothbrush trees in trade contexts), which dispersed southward post-1900 BCE, contributing to Ancestral South Indian populations through admixture with local hunter-gatherers and influencing modern Dravidian languages in peninsular India. This hypothesis aligns with genetic substrates in groups like the Brahui of Pakistan and supports Indian subcontinental IVC trade in elephant ivory as a vector for linguistic spread, though direct textual confirmation remains absent due to the undeciphered script. Scholars like Michel Danino argue for broader cultural continuity into the Vedic period, citing persistent settlement patterns, healed skeletal injuries indicating non-catastrophic violence, and early genetic studies showing high indigenous diversity without major Central Asian influx around 1500 BCE, challenging invasion models in favor of autochthonous evolution. However, mainstream archaeological consensus highlights selective integrations—such as craft skills and rural economies—into both Dravidian southern trajectories and northern Indo-Aryan overlays, with PGW and later Northern Black Polished Ware (700–300 BCE) reflecting revived trade and state formation that built on, rather than replicated, Harappan urbanism. This synthesis underscores Indian subcontinental IVC's role as a foundational substrate, diluted by regional diversification and external pastoral influences, evident in the absence of Harappan monumental scale in early Vedic texts or material records.

Genetic and Anthropological Evidence

Ancient DNA Studies and Population Genetics

The first ancient DNA (aDNA) analysis of an Indus Valley Civilization (IVC) individual was reported in 2019 from a female skeleton (I6113) excavated at the Rakhigarhi site in Haryana, India, dated to approximately 2600–2200 BCE. This low-coverage genome revealed a genetic profile consisting of ancestry related to early Zagrosian farmers and herders (distal sources predating the separation of Zagrosian and Anatolian Neolithic lineages) mixed with Ancient Ancestral South Indian (AASI) hunter-gatherer ancestry, with no detectable contribution from Steppe pastoralists associated with Yamnaya or Sintashta cultures. The Zagrosian-related component aligns with migrations of farming populations into the region around 7000–5000 BCE, while AASI represents indigenous South Asian foragers present since at least the Upper Paleolithic. This admixture model fits the Rakhigarhi individual as part of an "Indus Periphery Cline," observed in contemporaneous samples from sites like Gonur Tepe in Turkmenistan, indicating genetic continuity across Indian subcontinental IVC core and border regions without external Steppe input during the Mature Harappan phase (2600–1900 BCE). A concurrent broader study of 523 ancient genomes from South and Central Asia, published in 2019, reinforced these findings by modeling Indian subcontinental IVC populations as deriving primarily from the same dual-source cline: approximately 45–82% Zagrosian-related ancestry and the balance from AASI-like groups, based on qpAdm admixture tests against reference ancient populations. This genetic signature lacks the Steppe_MLBA (Middle to Late Bronze Age) ancestry that appears in South Asia only after ~2000 BCE, typically as 10–20% admixture in post-IVC samples from the Swat Valley (e.g., ~1200 BCE), contributing to the formation of Ancestral North Indian (ANI) populations. Modern South Asians exhibit a gradient of this Indian subcontinental IVC-related ancestry, diluted by subsequent Steppe and, in some groups, minor East Asian components, with higher Indian subcontinental IVC-like proportions in southern and tribal populations (up to 70–80% in some Dravidian speakers). The absence of Steppe ancestry in the Rakhigarhi genome challenges claims of indigenous Indo-European (Aryan) origins within the Indian subcontinental IVC, as linguistic and archaeological evidence links Steppe groups to the introduction of Indo-Aryan languages around 1500 BCE. Population genetic analyses indicate low genetic diversity within Indian subcontinental IVC samples, consistent with a relatively homogeneous urban population shaped by endogamy and regional mobility, though limited sample size (only one full IVC genome to date) precludes definitive inferences on substructure. Fst distances show the Rakhigarhi individual is closest to modern northwestern Indian groups like the Ror, who retain elevated Indian subcontinental IVC-related ancestry (up to 60–70%), suggesting partial continuity despite later admixture events. Ongoing excavations at Indian subcontinental IVC sites, including plans to sequence over 300 additional skeletons, may clarify intra-IVC variation and test for subtle gene flow from neighboring regions like the Iranian plateau or Central Asia during the Early Harappan phase (3300–2600 BCE). These studies underscore that Indian subcontinental IVC populations formed through Bronze Age admixture of westward-migrating Neolithic farmers with local foragers, predating the demographic impacts of Steppe incursions that reshaped northern South Asian genetics post-1900 BCE.

Biological Insights into Health, Diet, and Demography

Skeletal analyses from major Harappan sites, including Harappa and Rakhigarhi, reveal a population characterized by moderate stature, with adult male heights averaging around 165-170 cm and females 155-160 cm, based on long bone measurements from over 100 individuals across cemeteries. Age-at-death distributions from these remains indicate high infant and child mortality, with adults rarely exceeding 40 years, reflecting typical Bronze Age demographic patterns influenced by infectious diseases and nutritional stresses rather than violence. Population estimates for the Mature Harappan phase place the total at 1-5 million, with urban centers like Mohenjo-daro supporting 35,000-40,000 residents and Harappa 20,000-30,000, inferred from site sizes, house densities, and grain storage capacities. Sex ratios in burials appear balanced, suggesting no extreme gender imbalances, though sample sizes remain small (e.g., n=37 at Rakhigarhi). Paleopathological evidence points to a generally robust health profile during the Mature phase, with low frequencies of trauma (e.g., cranial injuries under 5% in Harappan samples), indicating minimal interpersonal violence or warfare. Infectious conditions, including non-specific periosteal reactions on long bones and maxillary sinusitis, affected 10-20% of adults, likely linked to urban crowding and poor sanitation despite advanced drainage systems; these increased toward the Late Harappan phase, correlating with biosocial stresses like migration or environmental shifts. Joint diseases such as osteoarthritis were common in older adults (prevalence ~15-25%), attributable to repetitive labor in agriculture or craftwork, while dental pathologies showed heavy occlusal wear from abrasive diets but low caries rates, consistent with low-sugar consumption. Rare cases of possible leprosy and treponemal infections suggest localized disease burdens, but no evidence of mass epidemics or nutritional deficiencies like scurvy. Dietary reconstruction from lipid residue analysis of pottery reveals a heavy reliance on animal products, with ruminant fats (cattle, sheep/goat) and dairy dominating over 70% of residues, supplemented by non-ruminant meats like pork; this challenges assumptions of predominant vegetarianism and aligns with pastoral economies. Plant foods, including wheat, barley, and millets, contributed through C3/C4 isotopic signatures in bone collagen, but animal sourcing provided primary proteins and calories, evidenced by early dairy processing dating to 2500 BCE via absorbed vessel lipids. Fish consumption varied regionally, playing a supplementary role in coastal sites like Lothal rather than a staple, per ichthyoarchaeological remains. Stable carbon and nitrogen isotopes from Harappan teeth confirm mixed C3-C4 plant intake with elevated animal protein, supporting a diverse, calorie-sufficient diet that sustained urban densities without widespread malnutrition markers in skeletons.

Major Controversies and Debates

Aryan Migration Theory versus Indigenous Continuity

The debate centers on whether the Indo-Aryan languages and Vedic culture associated with the Rigveda (composed circa 1500–1200 BCE) originated from migrations into the Indian subcontinent following the decline of the Indus Valley Civilisation (IVC), or developed indigenously as a cultural continuity from Indian subcontinental IVC populations. The Aryan Migration Theory (AMT), also termed Indo-Aryan Migration Theory, posits that speakers of Indo-Aryan languages, part of the broader Indo-European family, entered northwestern India from the Pontic-Caspian steppe via Central Asia around 2000–1500 BCE, admixing with local post-Harappan populations. In contrast, the Indigenous Continuity or Out of India Theory (OIT) argues for an endogenous evolution of Vedic culture from Indian subcontinental IVC roots, rejecting significant external migrations and attributing Indo-European linguistic origins to the subcontinent with possible outward spreads. Proponents of AMT draw on multidisciplinary evidence. Linguistically, Indo-Aryan languages share systematic correspondences with other Indo-European branches (e.g., Sanskrit pitar akin to Latin pater for "father"), pointing to a proto-language originating in the Yamnaya culture of the steppe (circa 3300–2600 BCE), with subsequent spreads via Andronovo-related groups in Central Asia. Archaeologically, post-IVC phases show introductions like horse remains and spoked-wheel chariots absent in mature Indian subcontinental IVC sites (2600–1900 BCE) but prominent in Rigvedic texts, aligning with steppe-derived technologies. These differences extend to warfare, with no evidence of coat of mail or helmets in IVC, contrasted with Rigvedic descriptions, and are reflected in educational assessments such as UPSC Civil Services Prelims questions comparing IVC and Vedic cultures; for instance, the 2017 question queried statements on these disparities, including horse domestication, with discussions and varying answer keys across sources emphasizing statements on warfare and horses while debating metallurgical knowledge (gold, silver, copper versus copper and iron). Genetically, ancient DNA from Rakhigarhi (circa 2500 BCE) reveals Indian subcontinental IVC individuals as a mixture of Zagrosian farmers and Ancient Ancestral South Indians (AASI), lacking steppe ancestry, while post-2000 BCE samples and modern northern Indian groups exhibit 10–30% Steppe Middle-to-Late Bronze Age (MLBA) admixture, consistent with male-biased migrations around 1500 BCE. This admixture model, rather than violent invasion, explains cultural synthesis without skeletal evidence of mass conflict. Advocates for Indigenous Continuity emphasize archaeological continuity, such as fire altars at Kalibangan resembling Vedic yajna practices and urban-to-rural transitions mirroring Rigvedic pastoralism, arguing against abrupt breaks. They contend that the undeciphered Indus script may encode proto-Sanskrit, and absences like horses in Indian subcontinental IVC could reflect ritual rather than technological gaps. However, these claims face challenges: linguistic phylogenies place Indo-Iranian divergence outside the Indian subcontinent, with no credible reverse migration evidence; genetic data shows steppe ancestry appearing post-IVC, not predating it; and OIT often relies on reinterpretations dismissed in peer-reviewed linguistics as incompatible with comparative method rigor. Critics note that OIT gains traction in nationalist discourse amid skepticism of colonial-era AMT formulations, yet it underweights empirical datasets favoring external inputs. Recent ancient DNA analyses (2023–2024) reinforce AMT's core, with no steppe signals in Indian subcontinental IVC but their integration in Iron Age samples, supporting gradual elite dominance or pastoral influx over replacement. While debates persist—e.g., exact timing and cultural impact—the convergence of genetics, linguistics, and archaeology indicates Indo-Aryan elements as post-IVC arrivals, enabling synthesis with indigenous substrates rather than pure continuity. This view acknowledges Indian subcontinental IVC's Dravidian or pre-Indo-Aryan linguistic base, with migrations facilitating the Vedic synthesis amid climatic and societal shifts.

Interpretations of Social Structure and Equality Claims

Archaeological interpretations of the Indus Valley Civilization's social structure emphasize a relative absence of overt hierarchical markers compared to contemporary Mesopotamian or Egyptian societies, leading to claims of broad egalitarianism. Sites like Mohenjo-daro and Harappa lack palaces, monumental tombs, or temples that might indicate a centralized ruling elite or divine kingship, with urban planning featuring standardized brick construction and grid layouts suggesting collective organization rather than elite imposition. Burials recovered are predominantly simple, with limited grave goods such as pottery, ornaments, or mirrors, and few instances of differential treatment that clearly denote high status, though the small sample size—fewer than 100 intact burials across major sites—limits definitive conclusions. Evidence of variation, however, challenges absolute equality claims. House sizes at Mohenjo-daro range from small units of about 20-30 square meters to larger complexes exceeding 200 square meters, with features like private wells, multiple rooms, and courtyards in the bigger dwellings potentially indicating wealth or status disparities. Craft specialization, evidenced by dedicated artisan quarters and standardized production of beads, seals, and weights, implies economic differentiation and possible elite oversight or merchant classes controlling trade networks extending to Mesopotamia. Artifacts like the "Priest-King" statuette from Mohenjo-daro, depicting a bearded figure with a headband and robe, have been interpreted by some as representing authority figures, though its small scale and lack of regalia undermine grandiose ruler narratives. These interpretations remain contested due to the undeciphered script and absence of textual records, with egalitarian views often privileging the lack of monumental inequality markers while overlooking subtler proxies like settlement hierarchies in early Harappan phases, where larger villages dominated smaller ones. Critics argue that perishable materials or decentralized power structures could obscure hierarchies, and academic emphases on egalitarianism may reflect modern biases favoring non-hierarchical models over empirical gaps in elite evidence. Ongoing excavations, such as those revealing varied residential complexity, suggest a society with functional stratification driven by trade and administration rather than rigid classes or divine rule, though no consensus exists on the extent of social equality.

Cultural and Religious Legacies in Vedic and Dravidian Narratives

The Pashupati seal from Mohenjo-daro, dated circa 2400–1900 BCE, depicts a horned, three-faced figure in a seated posture surrounded by animals such as elephants, tigers, and buffaloes, leading archaeologist John Marshall to propose in 1931 an interpretation as a proto-Shiva or "lord of animals" (Pashupati), drawing parallels to the Vedic deity Rudra's later epithets in Hindu traditions. This view posits continuity in ascetic and theriomorphic elements, with the figure's yogic-like stance (possibly mulabandhasana) suggesting early meditative practices akin to those elaborated in later Upanishadic and yogic texts. However, scholars like Doris Srinivasan have critiqued this as projecting later Shaivite attributes onto an ambiguous composite image, noting that Rigvedic Rudra (circa 1500–1200 BCE) emphasizes destructive archery and storm aspects without explicit animal mastery or yoga, and the seal's horns may denote a tutelary spirit rather than divinity. Similar seals with swastikas, appearing over 100 times in Indian subcontinental IVC artifacts, recur in Vedic-era pottery and Hindu ritual symbols, indicating possible substrate influence on Indo-Aryan symbolism despite the absence of Vedic horse or fire-altar motifs in Indian subcontinental IVC remains. Other Indian subcontinental IVC seals and terracotta figures, such as those from Harappa showing cross-legged seated individuals with elongated limbs, have been linked by proponents like Karel Werner to proto-yogic postures, potentially contributing to the physical techniques formalized in texts like the Yoga Sutras (circa 400 BCE–400 CE); while some interpret these as proto-yogic postures, yoga as a systematized practice originates from later Vedic and Upanishadic texts (circa 1500–500 BCE), with no direct textual or doctrinal continuity from Indian subcontinental IVC evidenced. These elements may represent a non-Vedic substrate absorbed into Vedic culture during post-IVC integrations around 1900–1500 BCE, as evidenced by the synthesis of Rudra into the more benign Shiva in Puranic narratives, incorporating local animal veneration absent in early Rigveda hymns. Yet, archaeological disparities—IVC's urban sanitation and standardized weights versus Vedic pastoral nomadism—undermine claims of direct descent, with no Indian subcontinental IVC textual corroboration for Vedic deities like Indra or Agni, and genetic studies indicating steppe pastoralist admixture post-IVC collapse, diluting pure continuity narratives. In Dravidian narratives, linguistic hypotheses by Asko Parpola suggest Indian subcontinental IVC inhabitants spoke proto-Dravidian languages, with cultural persistence in South Indian traditions like Tamil Sangam literature (circa 300 BCE–300 CE), where motifs of bull worship and sacred groves echo Indian subcontinental IVC terracotta bovines and possible arboreal symbols. This substrate may underpin Dravidian Shaivite elements, such as the lingam phallus resembling IVC ring stones, potentially influencing temple cults in Tamil Nadu by integrating pre-Aryan fertility rites. However, Dravidian religious corpora, including Shaiva Siddhanta texts, postdate Indian subcontinental IVC by millennia and blend Indo-Aryan phonetics and deities, with no deciphered Indian subcontinental IVC evidence confirming Dravidian exclusivity; ancient DNA from sites like Rakhigarhi shows Indian subcontinental IVC affinity to Ancestral South Indians but lacks direct ties to specific Dravidian rituals, rendering legacies inferential rather than demonstrable. Overall, while substrate influences likely shaped both Vedic and Dravidian syntheses into classical Hinduism—evident in shared motifs like yoga and animal iconography—these remain conjectural amid Indian subcontinental IVC's material-urban focus contrasting Vedic oral-pastoral and Dravidian agrarian emphases.

Rumors of Suppression of IVC History

No credible evidence exists of deliberate suppression or hiding of Indus Valley Civilisation (IVC) history. Rumors likely stem from the undeciphered script, uncertainties in its decline attributed to climate change and droughts rather than invasion, and scholarly debates over links to Vedic culture or Aryan migrations. These gaps fuel speculation, but extensive archaeological research by institutions like the Archaeological Survey of India and international scholars is publicly documented, with no systematic cover-up.

References

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