
The Shaler Mountains dominate the interior of this coastal Aleutian landscape, rising sharply from the waters of the Pacific Ocean. This high-altitude terrain is marked by steep elevation changes that drop into the protected waters of Usof Bay and Blueberry Bay to the southeast. The survey highlights a remote coastal interface where glacial or tectonic activity has carved deep indentations like Johnson Cove, creating a complex shoreline typical of Unalaska Island. The absence of roads or permanent settlements in this quadrangle reflects the extreme isolation of the Aleutian range during the early twenty-first century, with the land defined primarily by its vertical relief and maritime boundaries.
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This is the sole edition of this map. No revisions or reprints were ever made.
1951 · Unalaska
USGS Topo · 1:250,000
1989 · Unalaska A-3
USGS Topo · 1:63,360
1989 · Unalaska A-2
USGS Topo · 1:63,360
1989 · Unalaska B-2
USGS Topo · 1:63,360
1989 · Unalaska B-3
USGS Topo · 1:63,360
2021 · Unalaska A-3 NE
USGS Topo · 1:25,000
2021 · Unalaska B-2 SW
USGS Topo · 1:25,000
2021 · Unalaska B-3 NW
USGS Topo · 1:25,000
2021 · Unalaska B-3 SW
USGS Topo · 1:25,000
2021 · Unalaska B-2 NW
USGS Topo · 1:25,000