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The problem with that definition is that "prehistoric" is a lot more recent than people realize in the Americas.

Interestingly the Klamath people have an oral history of the eruption of Mount Mazama and formation of Crater Lake over 7000 years ago.

That's incredibly interesting. Does it line up with the geographical record?

Just a few days ago there was a village in Canada discovered thanks to oral tradition. It has been dated thousands of years older than the pyramids

I wouldn't trust that one bit. Have you ever played telephone? 7000 years is a lot of generations, it's likely completely inaccurate.