The site is listed on the National Register of Historic Places. Evidence unearthed during an extensive archaeological excavation indicates that the site may have been used as a seasonal camp as early as 3000 or 4000 B.C., and as a more permanent campsite around 1000 B.C.
Stone tools made of basalt, quartz, jasper, obsidian and more were discovered. Marymoor Museum displayed many of the artifacts that were unearthed, but was closed down in 2002. Many artifacts can also be viewed at Burke Museum of Natural Hist & Culture in Seattle.
