[RightWhale]

There is little doubt that the Black Sea shallows could have held a considerable civilization before it flooded. That wouldn't imply that it was the seat of that civilization nor the origin. The residents of the regions of Asia north of the huge Asian mountain range (does it have a single name?) have a considerable tradition of migrating.

[Cronos]

The residents of the regions of Asia north of the huge Asian mountain range (does it have a single name?) have a considerable tradition of migrating.

The Himalayas. Essentially the mountain ranges formed when the sub-continent of India slammed into Asia a few millenia ago.