Belum Caves

The Belum Caves, located in Nandyala district of Andhra Pradesh's Rayalaseema region, is the second largest cave system on the Indian subcontinent, known for its speleothems, such as stalactite and stalagmite formations. The Belum Caves have long passages, galleries, spacious caverns with fresh water and siphons. This cave system was formed over the course of tens of thousands of years by the constant flow of underground water from the now-disappeared river Chitravathi. The cave system reaches its deepest point (46 m (151 ft) from entrance level) at the point known as Pataalaganga. Belum Caves have a length of 3,229 m (10,593.8 ft), making them the second largest caves on the Indian Subcontinent after the Krem Liat Prah caves in Meghalaya. It is one of the centrally protected Monuments of National Importance.

Belum came to scientific attention in 1884 by a British surveyor, Robert Bruce Foote and from 1982 to 1984, a team of German speleologists headed by H. Daniel Gebauer conducted a detailed exploration of the caves. In 1988, the Government of Andhra Pradesh declared the site protected, and the Andhra Pradesh Tourism Development Corporation (APTDC) developed the caves as a tourist attraction in February 2002. Today, 3.5 km (2.2 mi) of the caves have been successfully explored, though only 1.5 km (0.9 mi) is accessible to visitors. There are 16 different pathways, including the main entrance, and the caves also contain deposits of quartz. The caves consist of black limestone.

The Belum Caves are located near Belum Village in Kolimigundla mandal of Nandyal district (earlier in Kurnool district) in the state of Andhra Pradesh. Kolimigundla is situated 3 km (1.9 mi) from Belum Caves. The caves are an 8 km (5.0 mi) drive from Petnikota village.

Belum is part of a larger complex of caves carved out of the limestone deposits in the Erramalai region. Other caves include the Billasurgam caves, Sanyasula caves, Yaganti caves, Yerrajari caves, and the Muchchatla Chintamanu caves (caves are called gavi in the local language).

Even though the Belum Caves were known to local people, the first records of site come from the expedition report of British geologist and archaeologist Robert Bruce Foote, in 1884. Thereafter, the Belum Caves remained unnoticed for almost a century until a German team headed by Herbert Daniel Gebauer conducted detailed exploration of the caves in 1982 and 1983. The German expedition was assisted by Mr Bacham Chalapathi Reddy (retd. Deputy superintendent of police), Mr Pothireddy Rama Subba Reddy (retd. Headmaster), Mr Ramaswami Reddy, Mr Boyu Madduleti, Mr K. Padmanabhaiah, Mr K. Chinnaiah and Mr A. Sunkanna.

Belum Caves are geologically and historically important caves. There are indications that Jains and Buddhists monks occupied these caves centuries ago. Many Buddhists relics were found inside the caves. These relics are now housed in a museum in Ananthapur.

Archaeological survey of India (ASI) also found remnants of vessels of the pre-Buddhist era and dated the remnants of these objects to 4500 years BCE.

A new and second Indian cavernicolous (inhabiting caves) species of the genus Andhracoides was discovered in the Pataalaganga chamber. The organism is named Andhracoides gebaueri in honor of Herbert Daniel Gebauer who documented and mapped the complete cave. It is a minor arthropod can't be seen by naked eyes.