2024 Map of MacDonald Pass

About this map

Rimini and the surrounding heights of the Boulder Mountains anchor this section of the Continental Divide in the Helena National Forest. The landscape is defined by the high-elevation transition between Lewis and Clark and Powell Counties, where numerous gulches like Rich Spur Gulch and Mike Renig Gulch drain into the headwaters of Tenmile Creek and MacDonald Creek. Modern infrastructure follows historical routes over the mountain crest, with Austin Mullan Pass Rd and Priest Pass Rd crossing the divide near MacDonald Pass. Small settlements such as Frontier Town and Forest Heights are positioned along these corridors, reflecting the area's long-standing role as a gateway through the continental spine. The network of forest roads and the Continental Divide National Scenic Trl highlight a terrain traditionally utilized for both extraction and passage.