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Huge crater discovered in Greenland from impact that rocked Northern Hemisphere
November 14, 2018, University of Kansas
https://phys.org/news/2018-11-huge-crater-greenland-impact-northern.html
Possible Younger Dryas impact site found.
FYI - another idea on the matter, found here: https://theworldwideflood.com/2018/03/02/letter-to-the-editors-journal-of-geology/