A big problem is that so much of human history is now under water. The Mediterranean was likely an extremely fertile region in which to hunt, and likely the lar

A big problem is that so much of human history is now under water. The Mediterranean was likely an extremely fertile region in which to hunt, and likely the largest Neanderthal settlements that ever existed were there. Sadly, they are now under water. Likewise, much of the land between Africa and Saudi Arabia is now under water, though if we could explore it we would learn a lot about how humans migrated out of Africa. And likewise, the spread of humans in south east Asia --- our understanding would be very different if only we could easily see all the old settlements that are now under water. A significant part of our story has simply been washed away by rising sea levels, once the Ice Age ended.