
Chagulak Island dominates the western portion of this maritime survey, rising sharply from the surrounding waters as part of the Islands of Four Mountains chain. This isolated landmass serves as a natural divide between the cold reaches of the Bering Sea to the north and the expansive Pacific Ocean to the south. The 2021 topography illustrates the steep volcanic terrain characteristic of the Aleutian Islands, with land contours and maritime boundaries, such as t88s r153w, marking the transition between the open sea and this remote island peak.
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This is the sole edition of this map. No revisions or reprints were ever made.