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1958 Map of Isolation Peak

Name: 1958 Topographic Map of Isolation Peak
Creator: U.S. Geological Survey
Published: 1967
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1967

About this map

The Continental Divide serves as the backbone of this high-altitude landscape, separating the western drainage of Rocky Mountain National Park from the eastern slopes of Roosevelt National Forest. This late 1950s survey captures a transition in backcountry management and recreation, where established paths like the East Inlet Trail and St Vrain Trail provide the primary access to the glaciated interior. The presence of the Patrol Cabin near Thunder Lake reflects early administrative footprints in this wilderness.

The map reveals a complex hydrologic network of sub-alpine lakes and features such as Moomaw Glacier, located just below The Cleaver. While modern recreation dominates, the inclusion of Pear Reservoir and the Patrol Cabin offers insight into how these remote environments were monitored and utilized before more intensive wilderness protections were enacted. Elevations range from the high summits of Isolation Peak and Mt Alice down to the drainage of Columbine Creek.