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1989 Map of Unalaska C-4
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1989 Map of Unalaska C-4

USGS Topo · Published 1989

About this map

Unalaska Island is defined by its dramatic volcanic coastline and the expansive waters of the Bering Sea in this late-twentieth-century study. The terrain is dominated by prominent elevations such as Round Top, while the western shore is carved by significant maritime features like Volcano Bay and the northern reaches of Makushin Bay. The absence of roads or established settlements on this portion of the island emphasizes the raw, natural state of the Aleutian landscape, where geographical markers like Cape Kovrizhka and Point Kadin serve as the primary points of orientation. Marine navigation is further detailed through landmarks such as Makushin Point and offshore hazards like Rock Islet and Rock No 1. This survey provides a precise look at the topographical contours and coastal protrusions before the turn of the millennium.

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Map Details

Date Portrayed1989
Date Published1989
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:63,360
Physical Dimensions18 x 21.8 inches

Editions of this 1989 Unalaska C-4 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