2017 Map of Thompson Pass

About this map

The Coeur d'Alene Mountains serve as a high-elevation backdrop for this 2017 study of the Idaho-Montana borderlands. The terrain is defined by a series of critical mountain gaps, including Thompson Pass, Glidden Pass, and Cooper Pass, which have historically facilitated movement across the state line. High alpine basins contain several named water bodies such as Revett Lake, Blossom Lakes, and the paired Lower Glidden Lake and Upper Glidden Lake. These peaks and ridges are managed under the jurisdictions of the Kaniksu National Forest, Coeur d'Alene National Forest, and Lolo National Forest. The map captures the remote character of Shoshone County and Sanders County, where transportation routes like State Hwy 4 and Prospect Creek Rd follow the natural contours of the land, navigating around summits like Beaver Peak and Andys Knob.