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1970 Map of Prairie Reef

Name: 1970 Topographic Map of Prairie Reef
Creator: U.S. Geological Survey
Published: 1992
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1992

About this map

Bob Marshall Wilderness and the Sun River Game Preserve dominate this high-altitude landscape in the northern Rockies. The area, mapped in the late 1960s, serves as a crucial corridor for wildlife and watershed protection, defined by the towering Chinese Wall and the peak of Prairie Reef. A network of historic pack trails provides the only access through these protected lands, connecting remote landmarks such as the Prairie Reef Lookout and the Indian Point Guard Station.

Drainages like Red Butte Creek, White Bear Creek, and the Sun River carve deep into the terrain, while the wilderness boundary and the county line between Lewis and Clark and Powell counties mark the administrative limits of this mountain domain. The presence of Hermit Lake and Junction Mountain further illustrates the complex alpine geography preserved here just before the era of modern wilderness management.