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1963 Map of Chignik A-5

Name: 1963 Topographic Map of Chignik A-5
Creator: U.S. Geological Survey
Published: 1983
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1983

About this map

Mount Veniaminof dominates this 1963 survey, its summit defined by a massive crater and extensive crevasses that speak to the active volcanic nature of the Aleutian Range. The glacial landscape is meticulously documented, showing the radial drainage pattern of Cone Glacier, Fog Glacier, and Island Glacier as they descend from the high peaks.

The presence of extensive lava flows on the southern flanks of the mountain illustrates the geological force that shaped this wilderness. Below the ice line, the glacial melt feeds into the braided channels of the Muddy River and Sandy River. While this region remained largely unsurveyed on the ground at the time, the photogrammetric data provides a clear view of the transition from permanent ice fields to the alluvial plains of the Alaska Peninsula.