El Capitan from south, the cliff of El Capitan lies near the center, with Guadalupe Peak concealed behind it. Culberson County, Texas. 1945.

El Capitan from south, the cliff of El Capitan lies near the center, with Guadalupe Peak concealed behind it. Numbers (on published photo; progressing down the mountain) refer to original section by Shunard; White limestone (Capitan); upper dark limestone (Pinery); yellow sandstone (Delaware Mountain); basal black limestone (Bone Spring). Letters (on published photo progressing downward) refer to Quaternary deposits; older slope deposits; younger slope deposits: Oblique aerial photo by U.S. Army Air Corps. Culberson County, Texas. Circa 1945. Plate 1, in U.S.Geological Survey Professional paper 215. 1948.