2020 Map of Lookout Pass

About this map

Lookout Pass sits at the high point of this rugged Bitterroot Mountains corridor, marking the shared boundary of Idaho and Montana. This survey details a landscape defined by historic transportation routes, where the Old Yellowstone Trl and the former rail beds of the Hiawatha Rail Trail navigate the steep grades of the Coeur d'Alene Mountains. The map reveals the intricate engineering required to cross the divide, most notably at the Saint Paul Pass Tunnel near the settlement of East Portal. Small outposts like Sohon and Borax are positioned along the upper reaches of the Saint Regis River, while high-altitude features like Saint Regis Lake and Copper Lake drain into the narrow valleys below. The map also traces the winding courses of Bullion Cr and Frazer Cr within the protected lands of the Coeur d'Alene National Forest and Lolo National Forest.