These people relied on large animals such as deer and elk for sustenance, supplemented with small animals and plant resources. There appears to be an increased use of the riparian zone from the previous phase and there are no apparent permanent structures or camps. Archeological sites with similar artifacts are spread over a large region, stretching as far west as The Dalles, Oregon.
Projectile Points and fragments of the Coopers Ferry II Phase. Scale and divisions are in Centimeters. (Source: Cultural Chronology of the Lower Salmon River (pdf), DAVIS, Loren G., Department of Anthropology, Oregon State University)