Answer: Aryans were fair skinned, tall, and spoke a different language from Dravidians who were dark, short and spoke Dravidian language. Recent excavations have proved that Aryans arrived in India much later (1500 BC) while Indian society has been divided into castes much before (around 7000 BC). Archaeological and linguistic evidence indicates that the Dravidians were the founders of the Harappan culture which extended from the Indus Valley through northeastern Afghanistan, on into Turkestan. The Harappan civilization existed from 2600-1700 BC.