1970 Map of Benchmark
USGS Topo · Published 1973About this map
The Sun River South Fork carves a deep valley through the wilderness of the Lewis and Clark National Forest in this 1970 survey. This area serves as a critical junction for forest management and back-country access, anchored by the Benchmark Work Center and the Benchmark Airfield near the confluence of Straight Creek and Wood Creek. The geography is defined by the Continental Divide, which snakes through the high country past Sugarloaf Mountain and Observation Pass.
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Map Details
Editions of this 1970 Benchmark Map
2 editions found
Other maps of this area
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1936 · Silvertip
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1942 · Silvertip
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1955 · Choteau
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1957 · Choteau
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1958 · Choteau
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1958 · Pretty Prairie
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