I find those ancient works truly amazing as those cuts, shapes and fittings(?) were done on site with?????
There is so much we don’t know.
A motivated intelligent man can do great things with what little is around.
Humans some 12000 years ago weren’t as stupid as we like to think. The technology might not have been there, but if you’ve got a good brain and a good rock you can do a lot.
Heck, a year ago we didn’t even have iPads. How did _we_ survive? Huh?