Sidhartha,
Much of what we read about Vedic history is underwater now, such as Krishna's palace in Dvaraka. Much of that history of Satrajit and the Syamantaka jewel took place just off the coast of India in the Arabain Sea.
What to speak of Kanya Kumari. It went all the way down to Madagascar and all the way over to The Land of Oz , Aussie, that is, Australia!
Cheers!