It was formerly known as the Catherine Archipelago and is comprised of four groups: the Fox, Andreanof, Rat and Near.  
The main navigational lanes through this archipelago are the Unimak, Umnak, Amukta, and Seguam passes.  The group lies atop the boundary between the Pacific and North American tectonic plates and its volcanoes includes Makushin, Bogoslof, and Grewingk.  It was formerly known as the Catherine Archipelago and is comprised of four groups: the Fox, Andreanof, Rat and Near.  Located between 52 degrees and 55 degrees north, FTP, name this chain of small islands in the Northern Pacific Ocean and extending outward from the Kamchatka peninsula to the Alaskan peninsula.
The main navigational lanes through this archipelago are the Unimak, Umnak, Amukta, and Seguam passes.  
Aleutian Islands