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2020 Map of Unimak A-4 SW, 2020 Print
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2020 Map of Unimak A-4 SW

USGS Topo · Published 2020

About this map

Avatanak Island dominates the western portion of this 2020 topographic study, its steep contours rising sharply from the waters of the Pacific Ocean. The coastline is marked by distinct indentations, including the sheltered Chimney Cove on the western shore and the wide Avatanak Bight to the south. Navigation through these Aleutian waters is dictated by the Derbin Strait, which separates the island's high ridges from neighboring landmasses. The lack of roads or established settlements on the island reflects its status as a landscape primarily defined by its extreme topography and maritime exposure. Researchers interested in the geography of the Aleutians East Borough can trace the precipitous terrain from the shoreline up to the island's interior peaks, terminating at the prominent southern tip known as Avatanak Point.

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Map Details

Date Portrayed2020
Date Published2020
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:25,000
Physical Dimensions24 x 29 inches

Editions of this 2020 Unimak A-4 SW 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