They Found A Rockshelter In Oregon Sealed 15,600 Years — And What Was Inside Shouldn't Exist

There is a shallow overhang of rock in the Oregon high desert outside a town called Riley that looks like a thousand other overhangs across the American West, and it is currently the oldest confirmed site of human occupation anywhere in North America. In this one I go through how that got established, and honestly the part I find most satisfying is the timing problem that was already quietly wrecking the old story before Rimrock Draw turned up anything. The ice free corridor everyone said the first Americans walked through did not fully open until eleven or twelve thousand years ago, and stayed barren for centuries after that, which means the doorway the whole Clovis model depended on was still shut at the exact moment people were supposed to be walking through it. Then the finds. Butchered remains of Camelops hesternus, a camel standing seven feet at the shoulder and weighing eighteen hundred pounds, with cut marks and stone tools alongside. A sealed layer of volcanic ash above them, chemically fingerprinted to a Mount St Helens eruption over fifteen thousand six hundred years ago, which locks everything below it in place. Radiocarbon on the tooth enamel came back around eighteen thousand two hundred and fifty. Scrapers made from orange agate that does not occur anywhere in the local basalt, so somebody carried it in or traded for it. And one of those scrapers still carries bison blood residue, protein fragments trapped in the microscopic cracks of the stone where bacteria and sunlight could not reach them. The tools sit deeper than the camel. Which means eighteen thousand is a floor, not a date.
#archaeology #history