
Gateway Pass sits at the heart of this high-altitude landscape, where the Continental Divide separates the Teton and Flathead county line. This wilderness environment is defined by the convergence of three major protected areas: the Bob Marshall Wilderness, the Lewis and Clark National Forest, and the Flathead National Forest. Significant peaks such as Mount Drewyer, Mount Patrick Gass, and Bighorn Mountain dominate the skyline, overseeing a complex network of drainage basins including the Middle Fork Birch Creek and South Fork Birch Creek.
38 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.
1903 · Saypo
USGS Topo · 1:125,000
1913 · Marias Pass
USGS Topo · 1:125,000
1914 · Heart Butte
USGS Topo · 1:125,000
1918 · Heart Butte
USGS Topo · 1:125,000
1936 · Silvertip
USGS Topo · 1:96,000
1942 · Silvertip
USGS Topo · 1:125,000
1955 · Choteau
USGS Topo · 1:250,000
1957 · Choteau
USGS Topo · 1:250,000
1958 · Choteau
USGS Topo · 1:250,000
1958 · Porphyry Reef
USGS Topo · 1:24,000