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2021 Map of Unalaska B-1 NW, 2021 Print
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2021 Map of Unalaska B-1 NW

USGS Topo · Published 2021

About this map

Unalaska Island and Sedanka Island dominate this maritime survey of the Fox Islands chain in the eastern Aleutian Islands. The terrain is defined by steep coastal elevations rising directly from the Pacific Ocean, with the narrow Udagak Strait separating the two landmasses. This passage provides a critical maritime corridor between the open ocean to the south and the sheltered waters of Udagak Bay to the north. At Passage Point, the geography highlights the complex shoreline and deep-water inlets typical of this volcanic archipelago. The map illustrates a landscape devoid of modern road infrastructure, emphasizing the isolation and maritime reliance of this subarctic region in the early twenty-first century.

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Map Details

Date Portrayed2021
Date Published2021
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:25,000
Physical Dimensions24 x 29 inches

Editions of this 2021 Unalaska B-1 NW Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain