It seems odd that an “advanced” civilization would make a Gobekli Tepi and only draw pictures of animals on slabs of rock. Maybe it was done some time post-disaster when the “advanced” aspect had already been wiped out, and they buried it in case whatever it was happened again.
There’s a book named The Story of Adam and Eve in the CIA reading library, which claims the Earth’s axis of rotation shifted (I would speculate it was only temporarily if it happened) due to ice buildup at the poles thousands of years ago and that caused the oceans to wash over the continents. Supposedly only a few illiterate clans at high altitudes survived, therefore it was basically a hard reset for civilization.
And supposedly that wasn’t the first time.
The Altantis tale may plug into this as well.
One can find his books in a library, bookstore or from Amazon.