“Almost certainly the nephilim (giants) who roamed the earth in 4000 BC. “
Well, I just don’t have an answer for that. You win.
Who decided that the Bible is a modern, western, science textbook?
..who almost certainly along with Gobekli Tepe, built Stonehenge, Easter Island, etc.
Food for thought and further "digging" maybe, and don't forget the Bible, an amazing detailed account of the ancient times some of which is otherwise unrecorded.
:)