“-——over the Alps around 3100 AD “
Huh?
Why, I was referring to future history of course, lol.
I meant BC.
The Köfels, Austria impact event is what I was recalling.
There’s almost as much hype and flimflam swirling around that one as there is this, since there’s some cuneiform tablet reputed to be an eyewitness account.
But, the factuality of the impact and the timing of it are not a topic of controversy that I’m aware, and it’s that, that gives me a little pause.
Here’s a reputable link, from The University of Bristol:
http://www.bris.ac.uk/news/2008/212017945233.html