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1970 Map of Prairie Reef

Name: 1970 Topographic Map of Prairie Reef
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The Bob Marshall Wilderness and the Sun River Game Preserve dominate this 1970 landscape, where the Continental Divide separates the Lewis and Clark National Forest from the Flathead National Forest. This remote mountain environment is defined by dramatic topographic features like the Chinese Wall and the high summit of Prairie Reef.

A network of historical access points and management facilities are visible, including the Indian Point Guard Sta and the Prairie Reef Lookout. Remote water sources and drainages like Hermit Lake, Ahorn Creek, and the West Fork Sun River are accessible only by specialized routes such as the Indian Creek Trail. The map documents a strictly protected wilderness area before modern recreational pressures, highlighting the rugged intersections of Lewis and Clark and Powell counties.