Arch Rock a island in Alaska
on N coast of Unalaska I. between Captains and Unalaska Bays, 1.8 mi. W of Unalaska, Aleutian Islands.
Descriptive name given in 1871 by W. H. Dall, U.S. Coast and Geodetic Survey (USC&GS). Baker (1906, p. 104) incorrectly located this rock near Amaknak I., 0.5 mi. to the east.
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