Photo shows the river and walls of Glen Canyon, during an expedition organized by Wesley Heath that Norman D. Nevills took down the San Juan and the Colorado to Lees Ferry, August 23 to September 3, 1938. Precise location unidentified, but probably in Glen Canyon
Photo shows Gregory Natural Bridge, located on Fifty Mile Creek near its mouth with the Escalante River, Glen Canyon National Recreation Area, Kane County, Utah. Photo taken on an expedition in September of 1965 during the rise of Lake Powell.
Photo shows the Navajo Sandstone cliffs around the entrance to Hidden Passage, along the Colorado River in Glen Canyon, with sandstone cliffs. Taken by geologist William C. Bradley during a river trip in 1958.