Neanderthals swimming across the Mediterranean......no way.....all that hair would clog up the Strait of Gibraltar and there’s not enough drain cleaner in the world to clear out that kind of mess.
Almost, close, not exactly, really close but not quite.
All that neanderthal hair did close off the Strait. The resulting high water overcame the main power crystal in Atlantis.
The explosion wiped out everything. No more neanderthals. No more Atlantis. No more hairball.
In fact, the only survivors were 1.5 people in africa, 3 in Lapland, and 2 sacred black chickens.