All around the hill fort of Pachmarhi, there are game reserves and forests where tribal people still live.
These settlements go back 10's of thousands of years - in several places you can see the caves where people lived. Their paintings show something of their lives (these examples have been dated between 5,000 and 10,000 years old).

This site tells you a lot more:
http://bradshawfoundation.com/india/pachmarhi/index.php