Randy Carlson is one of the guys that looks more specifically at the geological impact.
There are other guys that are looking at the megalithic civilizations across the world. They were linked, had lots in common and appear to have all stopped/Disappeared at the same time during those events.
Mainstream archeology will not deviate from their evolutionary based philosophy concerning human origins so they will not tell the story and are guilty of suppressing the guys that are questioning the established paradigm. I understand why but they become something far less than scientific when they suppress honest questioning.
There is sufficient evidence to support highly advanced culture that was global and which existed prior to the YD. If that is the case, and I believe that it is, the understanding of human development and the related time line(s) must come into question.
