The site was unearthed at 14,000 feet above the sea level on the way from Saser La to Ladakh, an official release said.
While exploring in Nubra valley during 2015-16, ASI Joint Director General S B Ota noticed a section, exposed due to road construction, showing successive layers comprising burning residue.
A charcoal sample collected from the site, which was sent to Beta Lab, Florida for radiocarbon, dated it back to 8500 BC.
Further, charcoal samples from lower and upper deposits sent for dating have provided radiocarbon dates of 8500 BC and 7300 BC respectively, indicating repeated human activity at this camping site for about eight hundred years, the release said.
Preliminary studies of charred bones collected from the site, carried out by P P Joglekar of Deccan Collage, Pune, have shown the presence of Gorel and Yak, it added.
"The research so far carried out has proved the antiquity and nature of human activities to an extent, but their camping patterns, extent of camping area, tools and other cultural aspects are yet to be traced," the release said.
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