Rattlesnake Camp, Middle Fork Salmon River
By Geology, Geophysics, and Geochemistry Science Center 2001 (approx.)
Rattlesnake Camp, Middle Fork Salmon River. Outcrops of Mesoproterozoic biotite metasandstone are prominent. Boat in mid-foreground is part of USGS–USDA Forest Service baseline geochemical characterization study of the river basin.