Borah Peak dominates this high-altitude landscape within the Challis National Forest, representing the highest point in the state. This portion of the Lost River Range is defined by complex drainage systems, where Rock Cr and Doublespring Cr carve through steep canyons. Human presence is marked primarily by high mountain crossings such as Doublespring Pass and Horseheaven Pass, which facilitate travel through the Pahsimeroi Mountains. Numerous water sources like Freighter Spring and Birch Springs indicate the critical role of groundwater in this arid alpine environment. The presence of Doublespring Pass Rd and Birch Springs Rd provides the primary access points for those traversing these remote slopes, where the Mahogany Cr drainage joins the broader hydrological network of the Idaho interior.
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1935 · Borah Peak
USGS Topo · 1:125,000
1938 · Borah Peak
USGS Topo · 1:125,000
1955 · Dubois
USGS Topo · 1:250,000
1956 · Donkey Hills
USGS Topo · 1:62,500
1956 · Doublespring
USGS Topo · 1:62,500
1958 · Dubois
USGS Topo · 1:250,000
1962 · Leatherman Peak
USGS Topo · 1:24,000
1967 · Burnt Creek
USGS Topo · 1:24,000
1967 · Elkhorn Creek
USGS Topo · 1:24,000
1967 · Borah Peak
USGS Topo · 1:24,000