Helen Lookingbill Site  The Helen Lookingbill Site is a prehistoric campsite in the Absaroka Mountains of Fremont County, Wyoming. Occupied over 12,500 years, the site has yielded more than 125,000 artifacts, including a large quantity of Early Plains Archaic side-notched points. The site has been assessed as a tool production location. The site was placed on the National Register of Historic Places on March 30, 2013.