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1951 Map of Rat Islands

Name: 1951 Topographic Map of Rat Islands
Creator: U.S. Geological Survey
Published: 1962
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1962

About this map

Amchitka Island stretches across the lower portion of this reconnaissance survey, serving as a focal point for military infrastructure in the Aleutians following the Second World War. A prominent Military Airfield is located near Constantine Harbor at the eastern end of the island, connected by a network of roads and trails to Kirilof Bay and South Bight. This layout reflects the island's strategic importance during the mid-century era, showing the intersection of military logistics and the remote volcanic landscape.

To the north, the map details several distinct volcanic landmasses including Semisopochnoi Island, which is dominated by peaks like Mt Cerberus and Sugarloaf Pk. The surrounding waters of the Bering Sea and Pacific Ocean are charted with soundings and depth curves, highlighting treacherous points such as Petrel Bank. Smaller islands like Segula Island and Little Sitkin Island are mapped with contour intervals that reveal their steep, mountainous character.