
The Union Pacific railroad line and Highway 15 anchor this high-altitude landscape where the Continental Divide defines the boundary between Montana and Idaho. The small ranching communities of Lima and Dell sit in the heart of the valley, supported by the waters of the Red Rock River and the significant Lima Reservoir. This era of the early 1990s shows a region managed for diverse uses, from the operations at the Silver Queen Mine to the extensive protected lands within the Beaverhead National Forest and Red Rock Lakes National Wildlife Refuge. The terrain is dominated by the Tendoy Mountains and the Snowcrest Range, which overlook the broad Centennial Valley. Mapping by the Bureau of Land Management highlights the intricate mosaic of public and private land ownership that characterizes the American West during this period.
69 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1888 · Three Forks
USGS Topo · 1:250,000
1893 · Dillon
USGS Topo · 1:250,000
1894 · Three Forks
USGS Topo · 1:250,000
1895 · Three Forks
USGS Topo · 1:250,000
1947 · Bozeman
USGS Topo · 1:250,000
1948 · Bozeman
USGS Topo · 1:250,000
1949 · Varney
USGS Topo · 1:62,500
1950 · Lower Red Rock Lake
USGS Topo · 1:62,500
1950 · Monument Ridge
USGS Topo · 1:62,500
1952 · Eli Spring
USGS Topo · 1:24,000