1950 Map of Sphinx Mountain

About this map

The Madison Range dominates this mid-century survey, defining the rugged boundary between the Gallatin National Forest and Beaverhead National Forest. This high-altitude landscape is characterized by prominent peaks like Sphinx Mtn and Koch Peak, which overlook a network of glaciated basins and drainage systems. The map documents the early infrastructure of the U.S. Forest Service, showing the placement of several outposts such as Big Spring Ranger Sta and Cache Creek Ranger Sta. Along the eastern edge, the transition from mountainous forest to cattle country is evident through established operations like the Michel Ranch and Lazy T 4 Ranch. A detailed network of pack trails, including the Bear Creek Trail and Wapiti Trail, connects these remote drainage basins long before the expansion of modern road systems in the region.