>Surprised to find no mention of a theoretical asteroid/comet impact... Fixed that for ya (based on the title of your link). Given that the article in question

>Surprised to find no mention of a theoretical asteroid/comet impact... Fixed that for ya (based on the title of your link). Given that the article in question here suggests people were in Oregon ~18,000 years ago, that's about a ~5200 year gap for what was found here to have been buried enough to, one would imagine, withstand what occurred in your link.