Global warming is right. 14000 years ago the ice age was going strong. The region was wetter then because the continental glaciers shifted weather patterns.
Actually, 14,000 ya the ice age was already in retreat, but then not quite 13,000 ya something severe happened and drove us back into the Younger Dryas 1500 year colder period. OK, Sunken Civ, time for Firestone’s book.