Megaliths of India by N.Kameshwara Rao, Ms Puja Thakur and Yogesh Malinathpur.
“That India is a treasure house of megaliths is not known to many. Although from Kashmir to Kerala and from Itanagar to Gandhinagar India is filled with primitive megaliths yet they have been denied recognition as a source of our prehistory perhaps owing to their tribal origin.”
Some astonishing stuff here, and sadly a lot of damage as well...