posted on Aug, 22 2013 @ 02:42 AM
Check out the Carolina Bays via Google earth. They look like impact craters, but are very shallow. I read a book about a possible impact event that
may have caused the decline of the Clovis culture and the extinction of large mammals, "Cosmic Collisions", or something like that.
The authors went on to state that the collision was caused by a wave from a supernova thousands of years prior to the Clovis event.
I believe there was an impact event, but I wasn't convinced about the supernova.
I would be very interested if the impact could be proved.