1965 Map of Deadman Pass

About this map

The Continental Divide winds through this high-altitude landscape on the Montana-Idaho border, marking the boundary between the Beaverhead National Forest and the Salmon National Forest. The map documents a rugged transition point where water flows toward different oceans, centered on Deadman Pass. To the northwest, the L-Diamond Ranch sits near an Old Railroad Grade that once climbed through this difficult terrain. The drainage patterns are intricate, with several branches of North Fork Maiden Creek and Horse Prairie Creek carving through the slopes. Notable landforms include the high peaks of Elk Mountain and the steep descents of Deadhorse Canyon and Rough Canyon. Remote water features like Dad Creek Lake and numerous unnamed Springs highlight the isolated nature of this high-country survey from the mid-1960s.