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.
“15,000 years or so ago - give or take a few thousand.”
I could be wrong, but it seems like that particular dam is getting ready to give way.
Thank you. Yale university says it was built 700 years ago, give or take 10 years, what a bunch of, what a crock of... And these guys have PhD’s in history and write books. Peer reviewed no doubt, aka faculty members giving each other reach-arounds.