I have no notion of where Dravidian people are from. This is quite mysterious although they are somewhat similar to Australian aboriginals.
But who knows where they are from?
Dravidians are possibly ancient Caucasoids. They probably came from Western Iran (Elamites) and before that, maybe the Levant all the way back to 15-20,000 YBP by the old theories.
They only look like Aborigines because they admixed so heavily with the existing population of Australoid Veddoid types who were already there when the Dravidians showed up.
Filed under Aborigines, Anthropology, Asia, East Indians, India, Iran, Middle East, Physical, Race/Ethnicity, Regional, South Asia, South Asians