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1964 Map of Pinnacle

Name: 1964 Topographic Map of Pinnacle
Creator: U.S. Geological Survey
Published: 1968
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1968

About this map

The Middle Fork Flathead River carves a path through the northeastern corner of this 1964 survey, defining the boundary between Glacier National Park and the Flathead National Forest. Along the river’s western bank, the Great Northern Railway and the Theodore Roosevelt Highway navigate the steep terrain near the settlement of Pinnacle. This corridor was critical for transcontinental travel, evidenced by engineering features like Tunnel No 2 and Tunnel No 3 that pierce the mountain ridges.

Away from the transport corridor, the landscape is dominated by high-altitude features including the Grant Glacier on Grant Ridge and numerous alpine basins holding Marion Lake and Dickey Lake. To the south, labels like Essex and Elk Mountain mark the periphery of the more developed river valley, while the Boundary Trail and various unnamed pack trails suggest the era's reliance on traditional routes for forest management and backcountry access.