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The Helen Lookingbill Site is a stratified open-air prehistoric campsite and tool stone procurement area located in Absaroka Mountains of northwestern Wyoming. The site was reoccupied repeatedly over the course of the last 12,500 years. Excavations between the late 1970s and 1993 recovered over 125,000 prehistoric artifacts and obtained 21 radiocarbon dates. Excavations at the site have yielded one of the largest samples of Early Plains Archaic side-notched points in the Central Rocky Mountains. Remaining deposits have the potential to answer significant research questions concerning human use of high altitudes and paleoclimates from the terminal Pleistocene to the late Holocene.

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