2017 Map of Twin Peaks

About this map

Mosquito Flat Reservoir sits at the southern reach of this drainage-rich territory within the Challis National Forest. High-altitude water bodies like Spruce Lake and the Twin Cr Lakes are scattered among prominent summits, including the namesake Twin Peaks and the massive White Valley Mtn. The landscape is defined by its deep drainage systems, with Challis Cr, Bear Cr, and Lodgepole Cr carving through the terrain. A historical boundary between Lemhi and Custer Counties cuts across the northern ridges. Transportation is limited to primitive routes such as the Sleeping Deer Road (Winter Trail) and the Challis Creek Rd, which provide access to this backcountry. Topographical landmarks like Corkscrew Mtn and Pine Summit serve as critical navigation points for those traversing the gulches and high meadows of the Salmon River Mountains.