The leading and eminent figures of the prehistoric research in this country, Dr. P.E.P Deraniyagala and Dr. Siran Deraniyagala are from your area. Once we thought that history of our civilization was supplanted by the so called Aryans who migrated from the northern part of the Indian subcontinent. New evidence are appearing to argue that it is not a correct historical assumption. As our historical chronicles describe, the Aryan migrants arrived here in 600 BCE. But now we know at least 1800 years before that we were in a position to cremate our deceased relatives and construct burial chambers to deposit their corporeal remains.