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The South Asian Stone Age covers the Palaeolithic, Mesolithic and Neolithic periods in South Asia. Evidence for the most ancient anatomically modern Homo sapiens in South Asia has been found in the cave sites of Batadombalena and Belilena in Sri Lanka. In Mehrgarh, in what is today western Pakistan, the Neolithic began c. 7000 BCE and lasted until 3300 BCE and the first beginnings of the Bronze Age. In South India, the Mesolithic lasted until 3000 BCE, and the Neolithic until 1400 BCE, followed by a Megalithic transitional period mostly skipping the Bronze Age. The Iron Age began roughly simultaneously in North and South India, around c. 1200 to 1000 BCE (Painted Grey Ware culture, Hallur).
Homo erectus lived on the Pothohar Plateau, in upper Punjab, Pakistan along the Soan River (nearby modern-day Rawalpindi) during the Pleistocene Epoch. Soanian sites are found in the Sivalik region across what are now India, Pakistan and Nepal.
Biface handaxes and cleaver traditions may have originated in the middle Pleistocene. The beginning of the use of Acheulian and chopping tools of the lower Paleolithic may also be dated to approximately the middle Pleistocene.
Analysis of mitochondrial DNA dates the immigration of Homo sapiens to South Asia to 75,000 to 50,000 years ago. An analysis of Y chromosome haplogroups found one man in a village west of Madurai to be a direct descendant of these migrators. These populations spread further to Southeast Asia, reaching Australia by 40,000 years ago. Cave sites in Sri Lanka have yielded the earliest non-mitochondrial record of modern Homo sapiens in South Asia. They were dated to 34,000 years ago. (Kennedy 2000: 180). For finds from the Belan in southern Uttar Pradesh, India radiocarbon data have indicated an age of 18,000-17,000 years.
At the Rock Shelters of Bhimbetka humans lived throughout the Upper Paleolithic (10th to 8th millennia BCE), revealing cave paintings dating to c. 30,000 BCE, and there are small cup like depressions at the end of the Auditorium Rock Shelter, which is dated to nearly 100,000 years; the Sivaliks and the Potwar (Pakistan) region also exhibit many vertebrate fossil remains and paleolithic tools. Chert, jasper and quartzite were often used by humans during this period.
The aceramic Neolithic (Mehrgarh I, Baluchistan, Pakistan, also dubbed "Early Food Producing Era") lasts c. 7000 - 5500 BCE. The ceramic Neolithic lasts up to 3300 BCE, blending into the Early Harappan (Chalcolithic to Early Bronze Age) period. One of the earliest Neolithic sites in India is Lahuradewa in the Middle Ganges region and Jhusi near the confluence of Ganges and Yamuna rivers, both dating to around the 7th millennium BCE. Recently another site along the ancient Saraswati riverine system in the present day state of Haryana in India called Bhirrana has been discovered yielding a dating of around 7600 BCE for its Neolithic levels.
In South India the Neolithic began by 3000 BCE and lasted until around 1400 BCE. South Indian Neolithic is characterized by Ashmounds since 2500 BCE in the Andhra-Karnataka region that expanded later into Tamil Nadu. Comparative excavations carried out in Adichanallur in the Thirunelveli District and in Northern India have provided evidence of a southward migration of the Megalithic culture. The earliest clear evidence of the presence of the megalithic urn burials are those dating from around 1000 BCE, which have been discovered at various places in Tamil Nadu, notably at Adichanallur, 24 kilometers from Tirunelveli, where archaeologists from the Archaeological Survey of India unearthed 12 urns with Tamil Brahmi script on them containing human skulls, skeletons and bones, husks, grains of charred rice and Neolithic celts, confirming the presence of the Neolithic period 2800 years ago. Archaeologists have made plans to return to Adhichanallur as a source of new knowledge in the future.
The most interesting pre-historic remains in Tamil India were discovered at Adichanallur. There is a series of urn burials. seem to be related to the megalithic complex.