2024 Map of Lost Trail Pass

About this map

Lost Trail Pass and Chief Joseph Pass serve as the primary conduits through this high-altitude section of the Bitterroot Mountains, where the modern border between Montana and Idaho follows the winding spine of the Continental Divide. The landscape is defined by its extensive drainage systems, including the headwaters of the North Fork Salmon River and numerous mountain creeks such as Moose Creek and Trail Creek. Geologic and historical interest centers on the Gallogly Hot Springs in the north and the crossing paths of the Lewis and Clark Nht Trl and the Continental Divide National Scenic Trl. This area marks a significant convergence of three major federal lands: the Bitterroot National Forest, Beaverhead National Forest, and Salmon National Forest, highlighting the region's enduring character as a preserved wilderness corridor.