Several decades older? Laughable! The Incas themselves said they had no idea who built it; it was already there when they arrived.
I’m no scientist but my guess is that it was there prior to the end of the last ice age.
15,000 years or so ago - give or take a few thousand.
I agree with you....
There are estimates that place the buildings as old or older than the pyramids of Egypt.
Laughable post — the Incas themselves never said anything about the site.
Check out some of the Graham Hancock videos on YouTube if you haven’t before. It’s obvious the Incas didn’t have the technology to cut/melt stone.