The picture features the 1996 excavation at Hell Gap, a deeply stratified Paleoindian and Archaic site located in the Great Plains of eastern Wyoming, USA. Diagnostic materials include projectile points from the Clovis and Folsom traditions, Agate Basin, Alberta, Frederick, Goshen, and other complexes.

The middle of the photo depicts Bonnie Pitblado, C. Vance Haynes and George C. Frison. Bonnie Pitblado is now Professor of Anthropology at University of Oklahoma, C. Vance Haynes is now Professor Emeritus of Anthropology at University of Arizona, and George C. Frison is Professor Emeritus of Anthropology at the University of Wyoming.