On the right hand side of the photograph is the U.S. Construction Railway, which is an entrance to the Black Canyon. Towards the back of the photograph is Fortification Hill.
From the John Steiger Photograph Collection (PH-00339). "Mt. Charleston, Nevada. June 12, 1921. Resting after climbing the mountain were (sic) it was very hard climbing. Notice the paper sack on log that is our Eats. Blieve (sic) me it was good. Summerville & Homan." (handwritten inscription H.E. Steiger)
From the John Steiger Photograph Collection (PH-00339). "Mt. Charleston, Nevada. June 12 1921 near the Hotel. Left to right; Geo. Summerville of Scotland; Clifford Atkins of Oklahoma; Walter Homan of Boston, Mass." (handwritten inscription H.E. Steiger)