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High Atlas
High Atlas
High Atlas
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The High Atlas, also called the Grand Atlas, is a mountain range in central Morocco, North Africa, the highest part of the Atlas Mountains.

Key Information

The High Atlas rises in the west at the Atlantic Ocean and stretches in an eastern direction to the Moroccan-Algerian border. At the Atlantic and to the southwest the range drops abruptly and makes an impressive transition to the coast and the Anti-Atlas range. To the north, in the direction of Marrakech, the range descends less abruptly.

The range includes Jbel Toubkal, which at 4,167 m (2.589 miles; 13,671 ft) is the highest in the range and lies in Toubkal National Park. The range serves as a weather system barrier in Morocco running east–west and separating the Sahara from the Mediterranean and continental zones to the north and west. In the higher elevations of the massif, snow falls regularly, allowing winter sports. Snow lasts well into late spring in the High Atlas, mostly on the northern faces of the range. On the Western High Atlas, there is Oukaïmeden, one of three main ski stations in Morocco.

The High Atlas forms the basins for a multiplicity of river systems. The majority of the year-round rivers flow to the north, providing the basis for the settlements there. A number of wadis and seasonal rivers terminate in the deserts to the south and plateaux to the east of the mountains.

The High-Atlas Mountains are inhabited by Berbers, who live from agriculture and pastoralism in the valleys. In the steppe zone of the High-Atlas, where precipitations are low, the locals created a smart technique in managing the low precipitations and the weak soil. They turn the rather semi-arid lands into fertile valleys called locally by Agdal (garden in Berber). This technique has intrigued many Western agriculturalists, in which they were impressed by the high efficiency of this agricultural system. Many scientists, particularly French scientists, make yearly expeditions to observe the community and their living system.

Climate

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High Atlas

There are two types of Alpine Climates in the High Atlas:

  • Mediterranean climate, dominates the north and south of the Western High Atlas until (Jbel Toubkal), as well as the northern part of Central High Atlas from Jbel Toubkal until Imilchil, owing to their exposition to the perturbations coming from the North Atlantic Ocean. These regions are relatively humid with irregular precipitations but occasionally torrential. The annual rainfall is between 600 and 1,000 mm (24 and 39 in). The drought in the summer months, interrupted by thunderstorms, is usually intense. Snow falls between November and April, but can persist from September to June in the peaks. Important rivers flow through the valleys (including Asif Melloul, Oued n'Fis, and Oued Tessaout) supply the fertile basins like Aït Bou Guemez and Imilchil. These conditions allow the existence of pine, oak and cedar forests. However, these forests are declining because of the reducing of annual precipitation, over-exploitation of the trees (used for construction and heating), and sheep-goat overgrazing.
  • Continental semi-arid or steppe climate, and is present in the southern part of the Central High Atlas, from Toubkal to Imilchil, and the whole Oriental High-Atlas down of Imilchil. These regions are marked by variations in temperatures. It extends southward from the steppe lands into rocky desert. In addition, some localized valleys supplied by irrigation make agriculture possible. Forests are almost rare. This portion of High-Atlas is very similar to the Rocky Mountains in the western United States.[citation needed]

Subdivisions

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Western High Atlas

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Jbel Toubkal in Toubkal National Park

In the west lies the oldest portion of the range. Its high point is the Jbel Toubkal, which is visible from the city of Marrakech. Jbel Toubkal lies in the Toubkal national park, which was created in 1942. The massif consists of Jurassic and Cretaceous formations notched by deep erosion-carved valleys. This part of the range includes the Ourika Valley, which is the only location in the High Atlas where the endangered primate, the Barbary macaque, Macaca sylvanus, is found; however, this primate is also found in parts of the Middle Atlas and the Rif, as well as parts of Algeria.[1] The Ourika Valley is also a location where a diverse flora was recorded as early as the 19th century.[2]

Central High Atlas

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A solid chalk mass morphologically dominated by tabular zones reaching an altitude of 2,500 m (8,200 ft) extends from Azilal to Ouarzazate. Here, the contrasting landscapes are similar to Colorado in the United States, with high plateaux, gorges and box canyons, and peaks sometimes splintered by erosion. Several peaks in this area exceed 4,000 m (13,000 ft), with Jbel Mgoun at 4068 m being the highest peak in this part of the High Atlas. The area is populated by Berbers.[citation needed]

Eastern High Atlas

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Village in the eastern High Atlas

The eastern part of the High Atlas forms vast plateaux at high altitude which provide the headwaters for the Moulouya River. It extends from the town of Khenifra. This portion of the range includes the solid mass of the Tamlelt whose northern edge is occupied by its higher peaks, such Jbel Ayachi at 3,747 m (12,293 ft). The altitude falls towards the east where the mountains join the pre-Saharan zone.

This massif became an internationally famous paleontological site after the discovery of the bones of a dinosaur called 'Atlasaurus',[3] which populated Morocco 180 million years ago. This dinosaur is also named Tazoudasaurus, after the name of the village of Tazouda, where it was discovered. The creature, about 15 metres (49 feet) long, is postulated to be an ancestor of the Sauropoda found in America. Until 140 million years ago, the African and American continents were connected.[citation needed]

Geology

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The Atlas Mountains define an ENE-WSW trending intracontinental belt, resulting from the tectonic inversion of the Late Triassic to Middle Jurassic rift basin during the Cenozoic convergence between the African and Eurasian Plates. The Moroccan Atlas is formed by the ENE-WSW-striking High Atlas and the NE-SW-trending Middle Atlas. The former is divided into three segments named western, central, and eastern High Atlas.[4]

The western High Atlas was part of the Atlantic Jurassic passive margin and is separated from the central and eastern High Atlas by the Paleozoic Massif, an area of pre-Mesozoic basement exposures located south of Marrakesh. The central and eastern High Atlas basin developed as a multiphase rift system opened toward the east by two major rift episodes occurring during Middle-Late Triassic and Early Jurassic (late Sinemurian and Pliensbachian. At present, the central High Atlas is characterized by a folded domain that is dominated by NE-SW striking structural highs or ridges separating elongated and wide synclines filled by Early and Middle Jurassic sediments.[4]

Subordinate NW-SE trending structural highs bounding equal-trend synclines are also present. Cretaceous and later syntectonic Tertiary units are also locally present (e.g., Miocene-Pliocene La Cathédrale conglomerates and sandstones).[4]

Triassic-Jurassic

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See also: Argana Group and Triassic–Jurassic extinction event

During the Triassic, the central High Atlas extensional basin was characterized by the synrift deposition of red beds and localized evaporites capped by extensive basaltic lava flows.[4]

Following the Triassic red bed deposition, marine conditions prevailed during the Early and Middle Jurassic resulting in the development of carbonate and mixed depositional systems. The Jurassic Atlas basin was open to the east (western Tethys realm) with Paleozoic provenance areas located toward the west and south. Liassic sedimentary systems evolved from extensive peritidal shallow water carbonate platforms (Hettangian-lower Sinemurian) that progressively backstepped toward the basin margins, to more localized platform development flanking the depocenters (Sinemurian).[5]

Normal faulting and block tilting increased notably during Pliensbachian times, resulting in north to south compartmentalization of the basin. Pliensbachian carbonate platforms preferentially developed in the margins basin and in synsedimentary structural highs, promoting abrupt transitions in the marine sedimentary record from shallow water to basinal facies.[5]

Toarcian

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See also: Azilal Group and Toarcian turnover

Global anoxia during the latest Pliensbachian and the earliest Toarcian occurred in close association with regional drowning of the lower Liassic platforms and localized deposition of basinal marls. From Toarcian times, carbonate platforms of the Azilal Formation developed in the margins of the central High Atlas basin, whereas the basin axis was occupied by a mixed carbonate-siliciclastic platform system prograding eastward to basinal deposits. This mixed system progressively graded to an extensive shallow water carbonate platform of the Anoual Formation, Bajocian to early Bathonian in age that is recognized throughout the central High Atlas.[5]

Cretaceous

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See also: Ksar Metlili Formation

Finally, the middle Dogger to Lower Cretaceous red beds record the sedimentation of continental to shallow marine transitional deposits that characterize the central High Atlas domain. Fully marine environmental conditions and platform carbonate deposits, which locally crop out in the margins of the Atlas System, dominated between Aptian and Cenomanian times.[5]

Paleontology

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Fossils of Mesozoic animals are known from High Atlas. Remains of sauropod dinosaurs Tazoudasaurus and Atlasaurus were found in the Toarcian and Bathonian deposits of this range, respectively.[6] In 2023, a fossil of a hybodontiform Strophodus was collected from the Bajocian deposits of High Atlas. It's the oldest Gondwanan specimen of this genus at the time of discovery.[7] The new species was named Strophodus atlasensis, after the mountain range where its holotype was found.[7]

Areas of interest

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A Kasbah in the Dades valley, High Atlas

At the foot of the High Atlas one finds Aït Benhaddou, a ksar (Maghribi Arabic: قـصـر, romanized: qṣer, fortified village) still in use. The ksar is widely used in the film industry.[8]

At approximately mid-range, the Amesfrane Rock Wall rises some 1,650 feet (500 m) from a dry riverbed wadi.[9] The formation is composed of rounded columns patterned with horizontal ridges that occurred as a result of erosion, which caused travellers to nickname it "the Cathedral", for its resemblance to a gothic cathedral.[10]

Among the summits at a height of 1,600 m (5,200 ft) height lies the Kasbah of Telouet on the road to Marrakech. The canyons and ravines of the Dadès and the Todra are also points of interest.

See also

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References

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Revisions and contributorsEdit on WikipediaRead on Wikipedia

High Atlas

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from Grokipedia
The High Atlas is a prominent in central , extending approximately 750 kilometers (466 miles) northeastward from the Atlantic coast near to the Algerian border, acting as a between the zones to the north and the arid Saharan regions to the south. It encompasses the highest peak in , Jbel , which rises to 4,167 meters (13,671 feet) in elevation and is located within Toubkal . Geologically, the High Atlas formed through a complex history spanning hundreds of millions of years, beginning with rifting (201–174 million years ago) that created rift valleys, followed by uplift during the era (66 million years ago to present) due to the tectonic collision between the African and Eurasian plates. The range's western sector features the tallest peaks exceeding 4,000 meters (13,000 feet), with colorful layers exposed by and streams carving deep valleys. Its semi-arid includes average annual temperatures around 20°C, precipitation of about 190 mm per year concentrated in winter (with snowfall above 1,500 meters), supporting a transition from and cedar forests at higher elevations to steppe-like lower down. Ecologically, the High Atlas hosts significant , including diverse flora and preserved in national parks, though human activities like rural-urban migration and have led to changes, reducing cultivated areas and promoting in some valleys. Culturally, the region is deeply tied to Amazigh (Berber) communities, whose traditional villages, livestock farming, and agriculture form the backbone of local life, with sites like the UNESCO-listed Ksar of Ait-Ben-Haddou exemplifying earthen architecture in the southern foothills; the area was severely impacted by the (magnitude 6.8), which caused over 2,900 deaths and extensive damage, affecting ongoing community resilience and development. The range's rugged terrain also supports , , and , drawing visitors to its scenic passes and hotspots.

Geography

Location and Extent

The High Atlas is a prominent mountain range located in central , forming the southernmost and highest portion of the broader system that spans . It extends approximately 700 km in a southwest-northeast direction, beginning near on the Atlantic coast and terminating near the Algerian border, where elevations reach around 3,000 m as the range gradually diminishes eastward. This orientation positions the High Atlas as the most continuous and elevated segment of the Atlas system within , with widths varying between 50 and 120 km. The range's northern boundary aligns with the valleys of the Tensift and Oum Er Rbia rivers, which drain toward the Atlantic Ocean, while its southern edge abuts the range and the Souss Plain to the west. Geographically, the High Atlas serves as a critical barrier, separating the temperate zones of Morocco's northern plains and coast from the arid expanses of the Desert to the south. Elevations across the High Atlas vary significantly, rising from approximately 1,000 m in the foothills to over 4,000 m in the core western and central sections, creating a dramatic altitudinal that influences local ecosystems and patterns. The highest peak, Jbel Toubkal, stands at 4,167 m (31°03′43″N 7°54′58″W), marking the summit of North Africa's tallest mountain outside the High Atlas' broader context. The range is informally divided into western, central, and eastern parts, reflecting variations in and .

Topography and Subdivisions

The High Atlas features a rugged characterized by steep escarpments rising abruptly from surrounding plains, deep river valleys such as the in the west, elevated plateaus, and dramatic gorges carved by fluvial action. These landforms create a varied , with the range averaging 50-100 km in width and reaching elevations over 4,000 m in multiple massifs. The escarpments, often exceeding 2,000 m in vertical drop, form natural barriers that influence local microclimates and accessibility, while plateaus and gorges provide contrasting flat expanses amid the peaks. The range is divided into three primary subdivisions: the Western High Atlas, Central High Atlas, and Eastern High Atlas, each exhibiting distinct topographic characteristics. The Western High Atlas, centered around the massif, is marked by lush, verdant valleys fed by higher precipitation, including the fertile with its terraced agriculture and waterfalls. In contrast, the Central High Atlas features the Mgoun massif and expansive chalk plateaus, such as those extending from Azilal to at altitudes around 2,500 m, interspersed with deep gorges like the Dadès and Todra. The Eastern High Atlas, encompassing the Ayachi massif, transitions to more arid landscapes with sparser vegetation, bridging the mountains to the Saharan desert fringes and featuring rocky outcrops and dry wadis. Prominent peaks define these subdivisions, with Jbel Toubkal at 4,167 m dominating the western sector as North Africa's , flanked by nearby summits like Afella (4,043 m). In the central region, Jbel Mgoun rises to 4,071 m, while the eastern part includes Jbel Ayachi at 3,747 m and other notables such as Ighil Mgoun. These elevations result from ongoing tectonic processes, with uplift providing the foundational rise that subsequent erosion has sculpted into the current jagged profile. Intense fluvial and glacial erosion since the has incised valleys and gorges, exposing older structures and enhancing the range's dissected morphology without significantly lowering overall elevations.

Hydrology

The hydrology of the High Atlas is characterized by a network of rivers and wadis that originate from the mountain's high elevations, where precipitation and snow accumulation provide the primary water sources for downstream regions. Major northern-flowing rivers include the Tensift, which rises at approximately 4,000 meters in the western High Atlas and flows westward for about 250 kilometers toward the Atlantic Ocean, fed by numerous tributaries in the mountainous upstream basin. In the eastern sector, the Moulouya River emerges at the junction of the High and Middle Atlas massifs, draining a vast watershed of approximately 55,000 square kilometers before reaching the Mediterranean Sea after approximately 600 kilometers. Southern wadis, such as the Dades and Todgha (Todra), drain toward the pre-Saharan zones; the Dades originates in the central-southern High Atlas and flows southeastward through dramatic gorges, contributing to the Draa River system that dissipates in the Sahara, while the Todgha River carves the eastern High Atlas gorges before joining oases en route to arid lowlands. River flows in the High Atlas exhibit strong , driven by winter accumulation from to , with peak discharges occurring during spring that sustains in downstream valleys. This contributes up to 50% of annual river discharge in some catchments, particularly in the western and central sectors, though perennial flows remain low in the arid eastern regions due to limited rainfall and high . patterns, influenced by orographic effects, further modulate runoff, with intense winter events leading to episodic high flows. Soils in the High Atlas reflect the rugged topography, with thin, rocky —classified as weakly developed soils (sols peu évolués)—dominating steep slopes due to and limited pedogenesis. In contrast, fertile alluvial soils accumulate in valley bottoms from river deposits, supporting intensive agriculture through traditional Berber agdal systems, which involve and communal land management to maintain soil productivity and prevent degradation. Water management in the High Atlas relies on a mix of traditional and modern practices to harness seasonal flows and mitigate scarcity. Ancestral networks, including seguias (open channels) and khettaras (qanats)—underground galleries tapping —facilitate equitable distribution from rivers to terraced fields, with community ensuring rotational access. Modern , such as those in the Tensift and Moulouya basins, store for controlled release and support , though variability—marked by reduced and shifting melt timing—threatens replenishment rates. Studies indicate that winter drives direct recharge, while delayed spring contributions from are increasingly vulnerable to warming trends, potentially lowering overall .

Climate and Environment

Climate Patterns

The High Atlas displays marked zonal climatic variations shaped by its east-west orientation and topographic barriers. The northern and western flanks experience a Mediterranean regime with wet winters, yielding 600-1,000 mm of annual rainfall, enhanced by from Atlantic moisture. In the southern and eastern sectors, semi-arid conditions prevail with 200-400 mm of annually, resulting from the cast by the range on Saharan air masses. Above 2,500 m elevation, alpine conditions emerge, featuring persistent cover from to and total annual of approximately 800-900 mm at summits like , much of which falls as . Seasonal dynamics reflect the interplay of mid-latitude cyclones and subtropical highs. Winters are cool and wet, with mean temperatures ranging from 5-15°C at mid-elevations, as Atlantic depressions deliver frontal systems that intensify through uplift over the mountains. Summers contrast sharply, being hot and arid with temperatures of 20-30°C in valleys, dominated by the northward extension of Saharan high-pressure systems that suppress and rainfall. This bimodal pattern underscores the range's role as a climatic divide, with over 70% of annual concentrated in the October-April period. Microclimates add complexity to these patterns, particularly in topographically diverse areas. Valley inversions trap cold air overnight, forming frost pockets that lower minimum temperatures by 5-10°C below surrounding slopes, especially during clear winter nights. In the western High Atlas, frequent banks and intensified from westerly flows boost local rainfall by up to 20-30% compared to adjacent plateaus, creating moist corridors that contrast with drier eastern exposures. Since 2000, frequency has risen across the High Atlas, with severe episodes including 2000-2002, 2005, 2012-2014, and 2016, driven by reduced winter and higher . The 2023 heatwaves, with temperatures exceeding 40°C in lowland areas, intensified by hastening and , compounding multi-year deficits. As of 2025, analyses confirm prolonged durations and greater severity post-2000 relative to earlier decades, signaling a shift toward amid broader Mediterranean drying. As of mid-2025, , including the High Atlas region, has been identified as a global hotspot, with the ongoing entering its seventh year and projections indicating further in mountain basins.

Biodiversity and Conservation

The High Atlas hosts a diverse array of vegetation zones shaped by elevational gradients and Mediterranean climate influences, ranging from montane forests to high-altitude steppes. At lower to mid-elevations on north-facing slopes, Atlas cedar (Cedrus atlantica) forests predominate up to about 2,600 meters, interspersed with evergreen holm oak (Quercus ilex) and maritime pine (Pinus pinaster) woodlands that provide critical habitat for endemic flora. Above the treeline, alpine meadows featuring grasses and wildflowers transition into arid steppe shrubs adapted to rocky, exposed terrains, supporting unique plant communities including the endemic Atlas daisy (Anthemis cyllenea). These zones harbor thousands of plant species, with hundreds endemic to the region, many of which hold medicinal value such as thyme and lavender used by local communities. However, these ecosystems face severe degradation, particularly the iconic Atlas cedar forests, which have declined dramatically due to by , , and human pressures. Atlas cedar forests in have experienced significant decline due to , , and human pressures, with current coverage estimated at around 140,000 hectares across the Atlas ranges, including the High Atlas where stands have shown notable dieback since the . Fauna in these habitats includes endemic mammals like the Barbary macaque (Macaca sylvanus), which inhabits the remnant western cedar zones and plays a key role in . Reptiles and , such as various adapted and beetles on arid slopes, contribute to the ecological balance, while birds including the endangered (Neophron percnopterus) frequent the open meadows and cliffs. Key protected areas like , established in 1942 as Morocco's first , encompass 38,000 hectares in the central High Atlas and safeguard core hotspots, including cedar stands and alpine zones home to and raptors. Yet, these ecosystems are threatened by ongoing deforestation from fuelwood collection, poaching of species like the for the pet trade, and climate change-induced shifts in precipitation that exacerbate drought stress on vegetation. Conservation initiatives have intensified since 2010, with organizations like the High Atlas Foundation leading efforts that planted over 1.1 million trees in the 2022-2023 season alone, focusing on cedar and fruit species to restore degraded slopes and support local livelihoods. Adjacent UNESCO-designated sites, such as the Atlas Cedar Biosphere Reserve in the central —which protects 75% of the global cedar population—complement these efforts through sustainable management of forests and wildlife corridors. In 2025, regional programs have expanded invasive species monitoring, targeting non-native plants encroaching on native meadows amid warming trends, as part of broader action plans.

Geology

Formation and Tectonics

The High Atlas mountain range formed as part of the , driven by the ongoing collision between the African and Eurasian plates, which initiated significant convergence around 30 million years ago during the and peaked in the (approximately 20-5 Ma). This tectonic regime inverted pre-existing rift basins, transforming them from extensional to compressional structures through reactivation of normal faults as thrusts. The overall process reflects intracontinental deformation, where the African plate's northwestward motion relative to Eurasia at rates of 4-6 mm/year imposes north-south shortening across the region. The formation unfolded in distinct stages, beginning with initial rifting in the Late Permian to Triassic periods (approximately 250-200 Ma), associated with the early breakup of Pangea and the onset of Atlantic opening, which created elongated basins filled with continental and volcanic rocks. Subsequent compression during the led to the development of thrust faults and folds, with basement-involved thick-skinned dominating, though some thin-skinned deformation occurs in cover sequences. Currently, north-south shortening across the High Atlas proceeds at about 1 mm/year, as measured by GPS data, contributing to ongoing uplift at rates of 0.5-1 mm/year in the axial zones. Key structural features include prominent anticlines, such as those in the central High Atlas, and major fault zones like the , a northeast-trending transpressional structure that accommodated oblique convergence and separates basement highs from sedimentary basins. Nappes and inverted rift segments further define the architecture, with the range acting as a critical topographic divide between Mediterranean drainage to the north and Saharan systems to the south. remains moderate but includes notable events such as the (magnitude 5.8) along reactivated faults in the western High Atlas and the (M_w 6.8) in the central High Atlas, which struck on September 8, 2023, and caused over 2,900 fatalities, highlighting the belt's active deformation despite its intracontinental setting.

Stratigraphy and Rock Types

The stratigraphy of the High Atlas in records a complex history of rifting, sedimentation, and inversion, spanning from the Late Permian-Triassic to the . The basal units consist of Late Permian-Triassic , including conglomerates, sandstones, siltstones, and mudstones, interbedded with tholeiitic flows associated with the around 200 Ma. These rift-related volcanics mark the initial continental extension. Overlying these are the Lower Jurassic (Liassic) deposits of the , comprising marine limestones and dolomites that formed on carbonate platforms, with thicknesses reaching several kilometers in rift basins. The Jurassic sequence continues with Upper Liassic to Lower Dogger varicolored marls and reefal limestones, followed by red sandstones and silty shales. Cretaceous strata reflect a phase of , featuring red sandstones and conglomerates in the lower units (Infracenomanian), transitioning to Cenomanian-Turonian white limestones and marls, such as those in the Akrabou Formation, which represent shelf successions up to 50 m thick. Key formations include the (Albian-Cenomanian), with fluvial to marginal marine sandstones around 200 m thick, and the overlying Aoufous and Ifezouane units, characterized by reddish mudstones, dolomudstones, and sandstones. deposits, including the Hadida-Ait Ouglif Formation (Upper Eocene-Early ), consist of red pelites, fine sandstones, and gypsum, derived from erosion of uplifted carbonates. conglomerates, up to 700-1200 m thick, fill foreland basins like with clasts from limestones in alluvial settings. Rock types in the High Atlas are predominantly sedimentary, accounting for approximately 80% of the exposed sequence, with limestones, , sandstones, marls, shales, and evaporites (such as and ) dominating. Igneous elements include Triassic-Jurassic tholeiitic basalts and minor alkalic flows, alongside subvolcanic intrusions. Mineral resources are notable, with deposits in Maastrichtian-Ypresian levels and barite occurrences in and units. Depositional environments evolved from continental rift basins with evaporitic conditions in the , to shallow marine platforms and reefs during the Jurassic-Cretaceous, as evidenced by the transition from redbeds to open marine limestones linked to the Tethys Sea. By the , settings included fluvial channels, coastal sabkhas, and carbonate ramps, with marine influences in formations like Akrabou. The shift to terrestrial environments featured lagoonal, , and lacustrine systems, driven by tectonic inversion that exposed and eroded earlier strata.

Paleontology

Key Fossil Discoveries

The High Atlas region has yielded several significant fossil discoveries, particularly from deposits, highlighting its importance as a paleontological site in . Among the earliest notable finds are those from Triassic-Jurassic boundary strata in the western High Atlas, where the basal sauropodomorph Tazoudasaurus naimi was unearthed near Toundoute village in Ouarzazate Province. This specimen, dating to the stage of the approximately 180 million years ago, represents the first described sauropodomorph from and includes a nearly complete skeleton with cranial material from the Azilal Formation. Jurassic dinosaur remains further underscore the region's rich vertebrate record. In the central High Atlas at Wawmda, the large sauropod Atlasaurus imelakei was discovered in Bathonian-Callovian strata of the Tiout Formation, dating to roughly 168-161 million years ago, consisting of a nearly complete postcranial that exhibits brachiosaurid-like features. Recent discoveries include the oldest known stegosaur, Adratiklit boulahfa, and the ankylosaur Spicomellus afer with unique spiked dermal armor, both from Middle Jurassic (Bathonian) deposits near Boulmane, representing early thyreophoran diversification in . Recent work has also identified small theropod tracks in Middle to Late Jurassic deposits of the central High Atlas, including those reported in 2022 from the Imilchil area, indicating the presence of diverse carnivorous dinosaurs alongside larger herbivores. Other notable discoveries include marine vertebrates from Bajocian marine deposits in the eastern High Atlas. In 2023, an incomplete dentition of the durophagous hybodontiform shark Strophodus atlasensis was described from the Agoudim Formation near , marking the oldest Gondwanan record of the genus and highlighting a specialized crushing predator in Middle Jurassic coastal environments. Cretaceous limestones in the High Atlas have preserved marine reptiles such as plesiosaurs and associated , though these are less abundant compared to continental dinosaur sites; for instance, isolated plesiosaurian remains from deposits near Goulmima in the eastern margins reflect a transition to marine influences during the . Key fossil localities include the Azilal and Demnat quarries in Azilal Province, part of the M'Goun Geopark, where continental sediments have produced tracks and skeletal elements, including theropod and sauropod ichnites from the Central High Atlas synclines. To date, several vertebrate taxa have been described from High Atlas sites, with ongoing excavations in the Imilchil and Toundoute areas continuing to reveal new material as of 2025, supported by international collaborations.

Paleontological Significance

The fossils of the High Atlas provide critical evidence for the early diversification of sauropod dinosaurs within during the , exemplified by species such as Tazoudasaurus naimi, which represents one of the basalmost eusauropods and indicates that sauropod radiation began earlier than previously thought, potentially in the stage around 183 million years ago. This diversification is linked to the ecological opportunities in the rift basins of northern , where tectonic activity facilitated habitat expansion for herbivorous dinosaurs. Furthermore, faunal similarities between High Atlas assemblages and contemporaneous European deposits, such as shared theropod and sauropod track morphologies, suggest migratory corridors across the Tethys Sea before the full breakup of Pangea, highlighting intercontinental links between Africa and during the Middle to . These connections underscore how the supercontinent's fragmentation influenced dinosaur dispersal patterns, with High Atlas records bridging Gondwanan and Laurasian evolutionary histories. Paleoecological reconstructions from the High Atlas reveal dynamic environments characterized by coastal lagoons and expansive floodplains, where platforms and fluvial systems supported diverse reptilian communities adapted to marginal marine and terrestrial settings. By the , these shifted toward more terrestrial-dominated landscapes with riverine and arid floodplains, reflecting broader Gondwanan trends of increasing continentality post-Pangea rifting. Comparisons with Laurasian faunas, such as those from the in , show convergent adaptations in sauropod body plans but distinct Gondwanan in theropod morphologies, emphasizing the role of geographic isolation in shaping regional . The High Atlas contributions have profoundly impacted research, providing key data on trans-Tethyan dispersals and Gondwanan radiations that refine models of faunal provinces. Recent 2025 isotopic analyses of red bed sediments from the southern Central High Atlas confirm arid paleoclimates during the Jurassic-Cretaceous transition, with δ¹⁸O and δ²H values indicating seasonal aridity that influenced preferences and migration. preservation in the region owes much to karstic systems and rapid burial within active settings, which protected remains from surface , though ongoing exposes sites to degradation and illegal collecting poses significant threats to scientific access.

Human Aspects

Historical Development

The human history of the High Atlas region reflects early habitation and strategic importance as a corridor between the Mediterranean coast and the . Prehistoric evidence includes tools discovered in caves and rock shelters across , with artifacts from the dating to around 100,000 BCE, indicating initial human adaptation to the mountainous terrain. By the period, ancestors of the Berber people established settlements, leaving behind extensive in the eastern gorges and plateaus such as Jebel Rat and the Oukaimeden Valley, featuring engravings of , wild animals, and anthropomorphic figures dated to approximately 4000 BCE. These depictions, part of the Tazina and Pecked Cattle styles, highlight pastoral and hunting practices during the wet phase. Ancient external influences were peripheral, with Phoenician and Carthaginian traders from the BCE establishing coastal outposts along Morocco's Atlantic shores, such as at (ancient Mogador), to facilitate gold and ivory exchanges via overland routes that skirted the Atlas fringes. Roman expansion in the 1st century CE remained confined to the northern peripheries, exemplified by the of at the foot of Jebel Zerhoun near the Middle Atlas, where urban planning and fortifications blended with local Berber elements but did not penetrate the High Atlas core. From the medieval era onward, the High Atlas served as a vital conduit for trans-Saharan commerce under Berber-led dynasties. The Almoravids in the crossed the range's passes, like Tizi-n-Telouet, to control trade hubs such as , transporting Saharan salt and sub-Saharan gold that fueled their empire's expansion. The subsequent Almohads in the 12th–13th centuries similarly leveraged these routes for economic dominance, integrating the mountains into broader North African networks. During the French protectorate (1912–1956), military campaigns involved systematic mapping expeditions to chart the rugged terrain, accompanied by initial like roads and fortifications to secure passage and administrative control. Post-independence in 1956, pursued through expanded , including highways linking the High Atlas to urban centers, though development lagged due to geographic isolation and socioeconomic marginalization. The (Mw 5.8), centered in the adjacent , caused widespread shaking across the High Atlas vicinity, destroying structures and prompting early reassessments of seismic vulnerability in the fold-thrust belt. In recent decades, enhanced seismic monitoring has been implemented, particularly after the 2023 Mw 6.8 Al Haouz event, utilizing satellite-based DInSAR techniques to track co-seismic displacements and fault interactions in the High Atlas.

Culture and Settlements

The High Atlas region is predominantly inhabited by the Chleuh (also known as Shilha or Ichelhiyen), a Berber ethnic group indigenous to the area, with an estimated population of around 2.8 million people affected across its villages as highlighted in recent disaster assessments. This group forms the core of the region's demographic makeup, speaking Tashelhit (Tachelhit), a Berber language characterized by its melodic tones and rich oral literature traditions. Tashelhit serves as the primary medium for daily communication, , and cultural transmission among communities in the western and central High Atlas. Settlements in the High Atlas are adapted to the rugged terrain, featuring terraced villages nestled in fertile valleys that maximize for and . Iconic structures include mud-brick kasbahs, fortified residences that blend defensive architecture with residential functions; a prime example is the 19th-century , once the seat of the influential Glaoui family and a testament to local building techniques using and palm wood. The region's averages approximately 30 inhabitants per square kilometer in more accessible areas, though it varies with altitude and resources, supporting a lifestyle marked by seasonal where Berber families migrate livestock to higher pastures in summer and return to lower valleys in winter. Cultural practices among the Chleuh emphasize communal harmony and resource stewardship, exemplified by the agdal system—a traditional governance mechanism for managing collective pastures and forests through regulated access periods, often enforced by tribal councils to prevent and promote . Vibrant festivals reinforce social bonds, such as the annual Imilchil Marriage Festival in the central High Atlas, where Berber tribes gather for music, dance, and matchmaking rituals rooted in legends of star-crossed lovers, drawing thousands to celebrate unity and heritage. Oral traditions thrive through and narratives, like the reconstructed accounts of historical battles such as Tazizaout, performed by bards to preserve and identity. Artisanal crafts, including intricate silver jewelry adorned with geometric motifs and protective symbols, are crafted by skilled artisans and hold cultural significance in rites of passage and trade. Since the early , social transformations have reshaped daily life in the High Atlas, with expanding to nearly universal coverage from less than half in , enabling better access to modern amenities and economic opportunities. Educational initiatives, bolstered by national programs like Vision 2015–2030, have increased school enrollment and literacy rates in remote Berber villages, though challenges persist in and infrastructure. The rise of has influenced roles, providing women with new avenues for through homestays and crafts while challenging traditional divisions of labor, fostering greater and visibility in decision-making.

Economy and Tourism

The economy of the High Atlas region in relies heavily on , which is constrained by the mountainous terrain and limited , accounting for only about 20% of the area suitable for cultivation. Primary crops include as the dominant winter cereal, often grown alongside potatoes, onions, and like fava beans in irrigated terraced fields, while olives and walnuts are cultivated in lower valleys for both and . complements , with s typically sheep and goats on rangelands, though livestock numbers have declined due to droughts and labor shortages from migration, with practiced by around 28% of families. Remittances from family members working in urban areas or abroad form a critical supplement, contributing over 50% of in many cases and supporting like roads and homes. Natural resources provide additional economic avenues, though extraction remains limited. operations target lead and deposits in the High Atlas. Rivers originating in the range, such as the Oued Tessaout and Drâa, support generation through that store for and electricity, harnessing the region's role as a major source for Morocco's supply. , particularly regulated harvesting of cedar timber in higher elevations, sustains local livelihoods but faces pressures from and climate variability, with the High Atlas hosting a significant portion of the country's forests. Following the , recovery efforts as of 2025 include a five-year government plan valued at approximately 120 billion Moroccan dirhams (about $11.7 billion USD) for reconstruction, though progress has been uneven, with only around 12% of required reconstructions completed by mid-2025, particularly in remote villages. International aid and NGOs have supported rebuilding schools, centers, and water systems, but challenges like access and funding persist. Tourism has emerged as a growing sector, driven by the region's natural and cultural assets, with attracting thousands of visitors annually for its scenic peaks and . Key activities include multi-day trekking to the summit of at 4,167 meters, North Africa's highest point, and skiing at , Morocco's premier alpine resort with facilities up to 3,200 meters. Popular sites extend to the UNESCO-listed , a fortified earthen settlement, and the dramatic , offering and cultural immersion. Visitor numbers rebounded post-COVID, aligning with Morocco's national surge to 16.6 million arrivals in the first ten months of 2025, a 14% increase from 2024. Sustainable tourism initiatives address post-pandemic recovery and environmental pressures, emphasizing community cooperatives for that preserve Berber heritage and reduce mass tourism impacts. In 2025, eco-lodge development expanded in the High Atlas, with eco-friendly accommodations like those in Imlil promoting low-impact stays and local employment amid a national trend toward responsible travel. Challenges include risks to fragile trails and , exacerbated by , prompting calls for better training and balanced visitor management to ensure long-term viability.

References

  1. https://www.visitmorocco.com/en/discover-morocco/geography-morocco
  2. https://earthobservatory.nasa.gov/images/89511/moroccos-high-atlas-mountains
  3. https://pmc.ncbi.nlm.nih.gov/articles/PMC11772813/
  4. https://whc.unesco.org/en/list/444/
  5. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011TC003015
  6. https://www.intechopen.com/chapters/37860
  7. https://www.researchgate.net/figure/Simplified-geological-map-of-the-Western-High-Atlas-and-Anti-Atlas-redrawn-from-the_fig1_249009883
  8. https://www.journeybeyondtravel.com/blog/ridgelines-of-morocco.html
  9. https://www.peakbagger.com/range.aspx?rid=602
  10. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019TC005563
  11. https://www.researchgate.net/publication/227117580_The_uplift_of_the_central_High_Atlas_as_deduced_from_Neogene_continental_sediments_of_the_Ouarzazate_province_Morocco
  12. https://www.watconman.org/archives-pdf/4wcm2024/4wcm2024-461-465.pdf
  13. https://nirkrakauer.net/papers/applsci-13-03841.pdf
  14. https://www.plymouth.ac.uk/research/earth-sciences/projects/long-term-landscape-evolution-of-the-moroccan-high-atlas
  15. https://www.sciencedirect.com/science/article/pii/S1631071305003615
  16. https://hess.copernicus.org/articles/26/571/2022/
  17. https://dspace.mit.edu/bitstream/handle/1721.1/132771/Tuel_et_al_2020_JH.pdf?sequence=2&isAllowed=y
  18. https://www.sciencedirect.com/science/article/pii/S2214581822001148
  19. https://openjicareport.jica.go.jp/pdf/11657566_12.pdf
  20. https://www.researchgate.net/publication/28079783_Constraints_on_alluvial_clay_mineral_assemblages_in_semiarid_regions_The_Souss_Wadi_Basin_Morocco_Northwestern_Africa
  21. https://www.jstor.org/stable/3774085
  22. https://iwaponline.com/wp/article/doi/10.2166/wp.2025.013/109710/Local-irrigation-systems-governance-and-climate
  23. https://earthobservatory.nasa.gov/images/89133/ancient-waterways-in-morocco
  24. https://www.sciencedirect.com/science/article/pii/S2212041625000701
  25. https://www.sciencedirect.com/science/article/pii/S2214581823002070
  26. https://www.encyclopedie-environnement.org/en/climate/climate-morocco/
  27. https://earthobservatory.nasa.gov/images/144677/wet-and-dry-morocco
  28. https://www.tandfonline.com/doi/full/10.1080/15230430.2022.2046897
  29. https://iwaponline.com/ws/article/23/11/4592/98297/Assessment-of-drought-variability-in-the-Marrakech
  30. https://www.researchgate.net/publication/382931639_Are_Droughts_Becoming_More_Severe_or_Longer_in_Morocco_Based_on_the_Standardized_Precipitation_Evapotranspiration_Index_for_1979-2022
  31. https://phys.org/news/2025-03-morocco-highway-averts-crisis-big.html
  32. https://www.moroccoworldnews.com/2025/07/226256/morocco-enters-global-drought-hotspot-list-report-warns/
  33. https://www.unccd.int/sites/default/files/2025-07/Drought%20Hotspots%202023-2025_ENG.pdf
  34. https://www.oneearth.org/ecoregions/mediterranean-high-atlas-juniper-steppe/
  35. https://www.cepf.net/stories/morocco-high-atlas-mountains-seeds-progress
  36. https://www.cabidigitallibrary.org/doi/full/10.1079/cabicompendium.12435
  37. https://pubmed.ncbi.nlm.nih.gov/33082041/
  38. https://www.worldatlas.com/articles/animals-of-the-atlas-mountains.html
  39. https://national-parks.org/morocco/toubkal
  40. https://www.equatorinitiative.org/wp-content/uploads/2017/05/MBLA-Case-Study-En-r3-compressed.pdf
  41. https://highatlasfoundation.org/
  42. https://www.biodiversa.eu/2025/04/24/updated-biodiversity-monitoring-priorities-for-2025-2028/
  43. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1998TC900015
  44. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024TC008618
  45. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018TC005413
  46. https://pubs.geoscienceworld.org/ssa/bssa/article/115/5/1951/653125/Update-on-the-Compressional-Tectonic-Evolution-of
  47. https://earthquake.usgs.gov/earthquakes/eventpage/us6000jlxx/executive
  48. https://geoexpro.com/a-geological-tour-of-moroccos-atlas-range/
  49. https://www.lyellcollection.org/doi/10.1144/SP545-2023-141
  50. https://www.tandfonline.com/doi/full/10.1080/17445647.2022.2101950
  51. https://www.sciencedirect.com/science/article/pii/S1631068304000636
  52. https://www.sciencedirect.com/science/article/pii/S1251805000800269
  53. https://www.nature.com/articles/s41559-019-0995-0
  54. https://www.nature.com/articles/s41559-021-01553-6
  55. https://www.tandfonline.com/doi/abs/10.1080/08912963.2022.2042808
  56. https://sjpp.springeropen.com/articles/10.1186/s13358-023-00270-w
  57. https://www.sciencedirect.com/science/article/abs/pii/S0195667117302380
  58. https://iaeme.com/MasterAdmin/Journal_uploads/IJARET/VOLUME_11_ISSUE_12/IJARET_11_12_098.pdf
  59. https://www.researchgate.net/publication/322763406_Sauropod_dinosaur_remains_from_a_new_Early_Jurassic_locality_in_the_Central_High_Atlas_of_Morocco
  60. https://www.nhm.ac.uk/discover/discovering-mysterious-middle-jurassic-dinosaurs-morocco.html
  61. https://scispace.com/pdf/phylogenetic-analysis-of-gondwanan-basal-eusauropods-from-ga1sh2qjat.pdf
  62. https://www.researchgate.net/publication/228117469_Comparative_analysis_of_Late_Jurassic_sauropod_trackways_from_the_Jura_Mountains_NW_Switzerland_and_the_central_High_Atlas_Mountains_Morocco_Implications_for_sauropod_ichnotaxonomy
  63. https://scitechdaily.com/dinosaur-footprints-suggest-that-jurassic-beasts-trotted-between-africa-and-europe/
  64. https://www.researchgate.net/publication/253095244_Facies_Architecture_of_an_Early_Jurassic_Carbonate_Platform_Slope_Jbel_Bou_Dahar_High_Atlas_Morocco
  65. https://academic.oup.com/sysbio/article/61/4/553/1635864
  66. https://dinodata.de/bibliothek/pdf_a/2024/upchurch-chiarenza-2024-a-brief-review-of-non-avian-dinosaur-biogeography-state-of-the-art-and-prospectus.pdf
  67. https://www.sciencedirect.com/science/article/pii/S2095383625001051
  68. https://www.sciencedirect.com/science/article/pii/S2095383625000781
  69. https://www.middleeasteye.net/features/moroccos-hidden-fossil-treasures-under-threat-desert-town
  70. https://link.springer.com/article/10.1007/s12371-021-00595-3
  71. https://rai.onlinelibrary.wiley.com/doi/full/10.1111/1467-9655.14312
  72. https://africanrockart.britishmuseum.org/country/morocco/
  73. https://www.mdpi.com/2076-0752/2/1/35
  74. https://www.britannica.com/place/North-Africa/Carthaginian-supremacy
  75. https://whc.unesco.org/en/list/836/
  76. https://archive.aramcoworld.com/issue/199302/across.the.high.atlas.htm
  77. https://www.usni.org/magazines/proceedings/1934/january/french-campaign-morocco
  78. https://www.moroccoworldnews.com/2024/11/167795/the-enduring-economic-legacy-of-post-independence-morocco/
  79. https://www.sciencedirect.com/science/article/abs/pii/S1464286706000064
  80. https://www.researchgate.net/publication/385247537_Analysis_of_the_co-seismic_displacement_caused_by_the_2023_Mw_69_High_Atlas_Earthquake_in_the_Ouarzazate_Province_Morocco_using_DInSAR
  81. https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/10705
  82. https://www.iwziwn.com/tachelhit-language-of-the-souss-and-high-atlas/
  83. https://chrisnsue.wordpress.com/2020/10/04/kasbah-at-telouet-home-of-the-pasha-of-marrakech/
  84. https://www.jstor.org/stable/3673021
  85. https://bioone.org/journals/mountain-research-and-development/volume-41/issue-4/MRD-JOURNAL-D-21-00028.1/Ilemchane-Transhumant-Pastoralists-Traditional-Ecological-Knowledge-and-Adaptive-Strategies/10.1659/MRD-JOURNAL-D-21-00028.1.full
  86. https://iucn.org/sites/default/files/2023-05/site_e.high-atlas_final.pdf
  87. https://www.aljazeera.com/gallery/2014/10/31/in-pictures-imilchil-marriage-festival
  88. http://michaelpeyron.unblog.fr/2010/07/01/de-and-re-construction-of-an-atlas-berber-epic-battle-of-tazizaout/
  89. https://www.1stdibs.com/buy/berber-jewellery/
  90. https://carnegieendowment.org/research/2024/09/moroccos-long-road-toward-economic-transformation?lang=en
  91. https://files.eric.ed.gov/fulltext/ED673895.pdf
  92. https://highatlasfoundation.org/en/insights/meet-the-women-blazing-a-trail-through-the-majestic-mountains-of-morocco
  93. https://link.springer.com/article/10.1007/s43621-025-00791-z
  94. https://www.nature.com/articles/s41598-024-81569-7
  95. https://www.researchgate.net/publication/325612438_Changes_in_livestock_farming_systems_in_the_Moroccan_Atlas_Mountains
  96. https://www.statista.com/topics/12996/mining-industry-in-morocco/
  97. https://www.britannica.com/place/Atlas-Mountains/The-economy
  98. https://www.washingtoninstitute.org/policy-analysis/neglected-high-atlas-mountains-and-challenges-life-post-earthquake
  99. https://borgenproject.org/earthquake-recovery-project/
  100. https://north-africa.com/morocco-two-years-after-the-high-atlas-mountains-earthquake-recovery-remains-uneven/
  101. https://oneearth.org/ecoregions/mediterranean-high-atlas-juniper-steppe/
  102. https://www.tripsavvy.com/atlas-mountains-complete-guide-4847268
  103. https://moroccanjourneys.com/the-atlas-mountains-morocco/
  104. https://en.hespress.com/125056-morocco-welcomes-16-6-mln-tourists-in-jan-oct-2025.html
  105. https://www.researchgate.net/publication/348448724_Sustainable_Tourism_Case_of_Ecotourism_in_the_Moroccan_High_Atlas
  106. https://www.fallzhotels.com/moroccos-hotel-industry-in-2024-a-fusion-of-culture-luxury-and-sustainable-tourism-and-whats-ahead-for-2025
  107. https://www.originaltravel.co.uk/travel-blog/sustainable-tourism-in-morocco
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