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1962 Map of Poison Peak

Name: 1962 Topographic Map of Poison Peak
Creator: U.S. Geological Survey
Published: 1964
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1964

About this map

Salmon National Forest dominates this high-elevation landscape in the early 1960s, a region defined by its steep drainages and strategic water sources. The map clearly delineates the Old Indian Treaty Boundary, which cuts across the high ridges between McDevitt Creek and Haynes Creek. This administrative line provides a historical reference for land use and territorial divisions within the Idaho wilderness.

Remote basins and peaks like Poison Peak and Watson Peak anchor the topography, while isolated clearings such as Twelvemile Meadow and Copper Basin indicate areas where the terrain levels off. Movement through this backcountry is restricted to a network of jeep trails, connecting vital water points like Bull Summit Waterhole and Andrews Spring. The canyon systems, including Mormon Canyon and Sawmill Canyon, suggest early paths of entry and extraction in this part of Lemhi County.