Billingsley, G.H., Goodwin, G., Nagorsen, S.E., Erdman, M.E., and Sherba, J.T., 2019, Geologic and related photographs of the Grand Canyon region (1967–2010): U.S. Geological Survey data release, accessed [Month Day, Year], at https://doi.org/10.5066/F7WS8SHW.
Summary
Aerial view southeast toward Spencer Springs at Bright Angel Shale and Muav Limestone level, west side of Spencer Canyon.
Summary
Aerial view southeast toward Spencer Springs at Bright Angel Shale and Muav Limestone level, west side of Spencer Canyon.