16 My Guess. Old World Concrete (media.conspiracies.win) posted 1 year ago by Questionable 1 year ago by Questionable +17 / -1 58 comments download share 58 comments share download save hide report block hide replies
It's not just that the stone was placed there? It's also been machined almost perfectly flat. I think the obvious answer is, they had technology back then which we assumed didn't exist.
We still don't have vertical vibra-screeds today. ;(