They came here, probably from Europe, and were ravaged in the wake of a comet striking the ice sheets.
Younger Dryas was serious climate change.
They also found evidence of the supernova explosion’s initial shockwave: 34,000-year-old mammoth tusks that are peppered with tiny impact craters apparently produced by iron-rich grains traveling at an estimated 10,000 kilometers per second. These grains may have been emitted from a supernova that exploded roughly 7,000 years earlier and about 250 light years from Earth.
https://www2.lbl.gov/Science-Articles/Archive/NSD-mammoth-extinction.html
Possibly Hiawatha crater in Greenland
Nope, that’s when Stone Depot went BK.
Their tools made life easier which began causing climate change.