Archaeologists have stumbled upon a 10-acre microlithic site, dating back to 4000 BC, at Agastheeswaram taluk in Kanyakumari district of Tamil Nadu recently.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/microlithic-site-discovered-tamil-nadu
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/statesman-new-delhi