William sent in the National Geographic link https://www.nationalgeographic.com/premium/article/have-scientists-found-800000-year-old-meteorite-impact-crater .. which is a story from a couple of years ago but in the news again. The article stipulates a meteorite but they are really talking about an asteroid – a quite large space rock. According to https://www.livescience.com/hidden-impact-crater-laos.html … it was 790,000 years ago. The impact was devastating as some ten per cent of earth’s surface was left strewn by shiny black lumps of debris known as tektites. These are glassy blobs of melted terrestrial rocks found from SE Asia to the eastern Antarctic continent. Rock liquified from the intense heat, later cooled into glassified tektites. They were found most abundantly in SE Asia. Eventually, the crater was found in southern Laos, on the Belavin Plateau. The crater itself is beneath volcanic lava – and is about 8 miles wide and 11 miles in length. Geologists recorded and measured out hundreds of sites in a 310 mile wide region around the plateau. A radia pattern of the thickening deposits emerged. Thai geologist, Sangard Bunopas, documented evidence in petrified forests and fossil beds of widespread landscape fires. flooding, and regional extinctions – and mass animal mortality. These are key similarities known from other catastrophic events where a space rock was involved.
The same story is also at Nexus – see https://nexusnewsfeed.com/article/ancient-mysteries/one-of-the-biggest-meteorite-crashes-in-earth-s-history-flung-debris-across-three-continents-800-000-years-ago/…
Then we are back to National Geographic again – see https://www.nationalgeographic.com/space/2021/04/430000-years-ago-a-meteor-exploded-over-antarctica-leaving-clues-in-the-debris … which tells us something similar happened 430,000 years ago. This one did not impact the earth but exploded in the air. One of the experts asked for his point of view was Mark Boslough. He has been a critic of the Younger Dryas Boundary event – and the idea of an impact event. Presumably even of a meteor bombardment. Sounds like the Younger Dryas is too close to comfort.