1987 Map of Warren Mountain

About this map

Challis National Forest dominates this central Idaho landscape, where the high-altitude terrain of Warren Mountain rises above a complex network of drainages and canyons. The 1987 survey details a high mountain environment defined by deep cuts like Larkspur Canyon and Black Tail Canyon, which feed into various creeks. Navigation through these heights is marked by the Pass Creek Summit and several 4WD trails that traverse the National Forest Boundary. The presence of numerous named springs, such as Squaw Springs and other unnamed Springs, highlights the hydrology that sustains the local basins. This map captures the transition between Custer and Butte counties at a time when the region remained largely undeveloped, used primarily for forest management and back-country access.