Some years ago I was talking with a woman archeologist in a bar. She told me about a site in California that was around 200 to 300,000 years old but was being rejected by the scientific establishment. I wonder whatever happened to that site.
“Forbidden Archeology” has a lot of info about stuff like that. Can’t cite anything ‘cause I’m too tired to go find the book and look stuff up. But it has a lot.