
The Pioneer Mountains dominate this high-altitude terrain in the early 1950s, defined by a cluster of peaks including Tweedy Mountain, Torrey Mountain, and Barb Mountain. This section of the Beaverhead National Forest reveals a landscape heavily shaped by glaciation, evidenced by the high concentration of alpine tarns such as Gorge Lakes, Glacier Lake, and Pear Lake. The presence of Winkley Camp and a Mast Ditch indicates the historical human intersection with this backcountry, where water management and seasonal encampments were vital for mountain operations.
47 named features on this map. Tap any name to fly to it.
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5 editions found
1893 · Dillon
USGS Topo · 1:250,000
1952 · Twin Adams Mountain
USGS Topo · 1:24,000
1952 · Argenta
USGS Topo · 1:24,000
1952 · Ermont
USGS Topo · 1:24,000
1955 · Dillon
USGS Topo · 1:250,000
1957 · Dillon
USGS Topo · 1:250,000
1958 · Dillon
USGS Topo · 1:250,000
1958 · Vipond Park
USGS Topo · 1:62,500
1959 · Polaris
USGS Topo · 1:62,500
1962 · Dillon
USGS Topo · 1:250,000