1960 Map of McCarthy D-4, 1977 Print
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1960 Map of McCarthy D-4

USGS Topo · Published 1977

About this map

Chisana Glacier dominates the northwestern landscape of this subarctic terrain, highlighting a region defined by extensive ice fields and high-altitude passes. The map documents a complex glacial network including the Lime Glacier and Middle Fork Glacier, where numerous crevasses are charted across the moving ice. The presence of Frederika Mountain and the nearby Frederika Glacier provide a clear view of the topographical relationship between these peaks and the ice flows they anchor. This mid-century survey serves as a vital record of the ice extent before modern climatic shifts, capturing features like the Jumpoff Icefall and the navigable Bow Pass. Toward the southwest, the Rohn Glacier and Shelter Valley Glacier converge in a high-elevation wilderness devoid of permanent settlements or roads, emphasizing the isolation of this portion of the Wrangell Mountains.


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Map Details

Date Portrayed1960
Date Published1977
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18.1 x 21.8 inches

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Source Details

CopyrightPublic Domain