I think theres something to be said for the idea that we are the offspring of ergaster and asian erectusSure does. And Ergaster is thought to be more generalized, containing the genetic variabilty to allow for multiple, natural selection events. Erectus is thought to have been more specialized in their genetic make up, making variability within their populations less pronounced.
eurasia is where it was all happening
in particular along the caucasus boundary that marks the mid point between asia and africa
very volcanic area
lots of food
lots of fresh water
lots of fish
lots of game
etc
and then theres that world wide myth about god living on a mountaintop

just to keep the rest of you happy as well it was very close to the area that the hybrid neanderthals were found
i don't think we culled them out of existence though
i think that we f***ed them out of existence instead
