The Vedic-Puranic literature as well as archaeological, geological, historical, linguistic, and literary accounts have been reviewed to establish the various cultures that evolved in ancient India from about 3500 BCE to the Mahabharata War (1450 BCE). The book describes various misconceptions, e.g., the myth about an Aryan invasion. The following markers are used to establish the dates and geographical locations of various cultures: (i) The rise in sea levels due to melting of land-based snow af