Havasu Canyon, Arizona | Mooney Falls as seen through the tunnels carved out of the travertine by prospectors circa 1895. Even the chains still remain, although they were replaced in 2010. | Photo by Brian F. Gootee
Geologic map of the Grand Canyon 30' X 60' quadrangle, Coconino and Mohave Counties, northwestern Arizona https://ngmdb.usgs.gov/Prodesc/proddesc_34288.htm
