Black Hills National Forest (S.D. and Wyo.) -- Employees;
Caption: "Custer Peak Lookout, Frank Tower (left) and Rockford Ranger Lionel Anderson (Right) Photo taken near the Custer Peak Lookout where the men were looking for trouble on the grounded telephone line."
Caption: "Closeup view of Devil's Tower showing the detail of the formation. This structure is actually a laccolith or the solidified core of a volcano. As the molten mass cools it forms five sided crystals."