The Crater?
A few years back my aunt got me onto a theory that the sudden disappearance of the Clovis culture and North American megafauna were caused not by over-hunting, but by an extraterrestrial impact on the Laurentide ice sheet. She has since given up on the Younger Dryas impact hypothesis, but I haven’t quite. A few days ago there were reports of the discovery of an impact crater under Greenland’s Hiawatha Glacier. Could this be the impact crater??