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1964 Map of Trinity Mtn

Name: 1964 Topographic Map of Trinity Mtn
Creator: U.S. Geological Survey
Published: 1966
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1966

About this map

Trinity Mtn Lookout 9451 stands as the commanding sentinel of this high-elevation landscape within the Boise National Forest during the mid-1960s. The map reveals a complex network of alpine basins holding a remarkable density of small glacial lakes, including Big Rainbow Lake, Twin Sisters Lakes, and the uniquely named Fiddle Lake. These water bodies are connected by a system of primitive trails and pack trails that emphasize the area's role as a remote backcountry destination.

Resource management and recreation are evident through the placement of the Gold Spring Campground and several unnamed Campground sites near Trinity Lake. The terrain is deeply dissected by numerous watercourses such as Smith Creek, Rainbow Creek, and Fall Creek, which flow through steep drainages toward the lower valleys. This period reflects the forest as it was before modern intensive development, where access was primarily limited to jeep trails and footpaths, preserving a quiet pocket of the Idaho high country.