The Pioneer Mountains define this high-altitude section of the Beaverhead National Forest, where soaring peaks like Tweedy Mtn and Torrey Mtn dominate the landscape. This 2017 survey details a glaciated wilderness characterized by a dense network of alpine water bodies, including the Gorge Lakes and the isolated Glacier Lake. The terrain is deeply incised by drainages such as Sawlog Gulch and Armstrong Gulch, which feed into major streams like Birch Cr and Mule Cr.
58 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.
1893 · Dillon
USGS Topo · 1:250,000
1952 · Twin Adams Mountain
USGS Topo · 1:24,000
1952 · Argenta
USGS Topo · 1:24,000
1952 · Torrey Mountain
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