2020 Map of Blue Dome

About this map

Birch Cr flows through a landscape defined by deep gulches and steep canyon walls at the junction of Butte, Lemhi, and Clark counties. Small outposts like Blue Dome and Lone Pine are situated along the valley floor, serving as points of reference in a territory dominated by the Targhee National Forest. The geography is shaped by drainage patterns from Worthing Canyon, Sawmill Canyon, and Skull Canyon, all feeding into the broader Birch Creek Valley. Evidence of earlier resource extraction persists at the Skull Mine near Skull Canyon Rd, while the John Day Cem near the southern boundary provides a rare genealogical marker for the area's residents. The road network, including Pass Creek Rd and O Brien Gulch Rd, follows the natural contours of the terrain, connecting remote sites like Johnson Bar to the primary valley thoroughfares.