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1951 Map of Afognak D-6

Name: 1951 Topographic Map of Afognak D-6
Creator: U.S. Geological Survey
Published: 1956
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1956

About this map

Katmai National Monument dominates the southeastern portion of this 1951 aerial survey, its designated National Monument Boundary cutting diagonally across a landscape defined by glacial activity and high-latitude river systems. The Douglas River winds through the central valley, fed by meltwater from the surrounding peaks. In the southeast corner, Fourpeaked Mountain rises as a prominent landmark, its slopes marked by numerous crevasses that indicate the movement of active ice fields.

The presence of these crevasses on a mid-century topographic sheet provides a specific record of the ice extent before modern climatic shifts altered these glaciated zones. This map represents a remote area of the Alaska-Third Judicial Division during a period when mapping relied on 1954 multiplex methods and 1951 aerial photography, offering a baseline for studying the changing physical geography of the Aleutian Range.