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1963 Map of Cascade Pass

Name: 1963 Topographic Map of Cascade Pass
Creator: U.S. Geological Survey
Published: 1965
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1965

About this map

Cascade Pass serves as a critical divide in this high-elevation wilderness, marking the boundary between Skagit and Chelan counties within the Mt Baker National Forest and Okanogan National Forest. The landscape is defined by massive glacial features, including the Boston Glacier and Sahale Glacier, which feed the headwaters of the North Fork Cascade River and the Stehekin River.

Mineral exploration is evidenced by the Diamond Mine near Soldier Boy Creek and the Black Warrior Mine overlooking Horseshoe Basin. These sites represent the difficult efforts to extract resources from such challenging terrain. The map also documents numerous high-alpine water bodies like Doubtful Lake and the Yang Yang Lakes, as well as prominent summits such as Johannesburg Mtn and Mount Formidable, illustrating the dramatic verticality and drainage patterns of the North Cascades.