The mountain terrain of the Tobacco Root Range dominates this landscape, where the settlement of Sterling sits at the base of the foothills. Historical mining activity is etched into the land at Norwegian Placer Gulch, signaling the region's mineral heritage. High peaks like Sugar Loaf Mtn and Wallace Peak rise above the drainage systems of Norwegian Cr and Hot Springs Cr. Much of the western portion is managed as part of the Beaverhead National Forest, characterized by steep ridges and multiple water forks. Notable landmarks such as Eagle Rock and the topographic prominence of Maltbys Mound serve as traditional navigational points for those moving through the high country. The road network, including Potosi Rd and N Meadow Creek Rd, follows the natural contours of the valleys, providing access to these remote reaches of Madison County.
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1888 · Three Forks
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 · Ennis
USGS Topo · 1:62,500
1949 · Norris
USGS Topo · 1:62,500
1950 · Harrison
USGS Topo · 1:62,500
1950 · Virginia City
USGS Topo · 1:62,500
1951 · Norris
USGS Topo · 1:62,500