Thanks Pontiac and TXnMA. Good one for the weekly digest ping, even though it's not exactly the weekend.
Robert Schoch pointed out (there are a couple of very good vids, one on YT, when he was the guest on Joe Rogan's show, and the other on Vimeo I think, Ancient Civilizations of the Sun, something like that) that the Gobekli Tepe site in Anatolia is megalithic, but much higher craftsmanship than Stonehenge, and is more than twice as old.
I had problems getting the Vimeo vid to play, so I went to the online vid ripper, ripped it, and downloaded it to the machine.
Gobeckli Tepe is amazing and apparently was built by Martians since it appears to have been created without an urban area.
We just started deciphering the Sumerian tablets a few decades ago so that is a whole new world.