Here's a site, kind of in the region where Iran, Armenia, and Turkey meet, where megalithic structures (using blocks around 40 tons) have been discovered and dated to 9,000 BC. It's a fairly large complex of stonework using large T-shaped blocks engraved with animal carvings. But no evidence so far has been uncovered so far to show they had knowledge of any metal working, or agriculture.
Göbekli Tepe - Wikipedia, the free encyclopedia
Gobekli Tepe: Proto-Indo-European Settlement - YouTube
So anyway, when people speculate about old build dates for Egyptian structures like the Great Pyramid (or the Sphinx -) we now have a ruin about 1500 km to the North East from there, which proves that at least someone in the older era was, in fact, capable of large scale stonework construction. It's not wild and kooky anymore to go thinking that kind of stuff. It's just different from the accepted view is all.