"Volcanoes." . . "Submarine geology." . . "Ocean bottom Alaska Rat Islands." . . "Volcanoes Alaska Rat Islands." . . "United States. Department of the Army," . . "United States. Department of the Navy," . . "Ocean bottom." . . "Alaska" . . "Geological Survey (U.S.)," . . "Ocean floor structures northeastern Rat Islands, Alaska"@en . . . . . . . . . . . . . . . . . . "Maps"@en . . . . . "Investigations of Alaskan volcanoes"@en . . . . . . . . . . . . . "Ocean floor structures, northeastern Rat Islands, Alaska" . "Ocean floor structures, northeastern Rat Islands, Alaska"@en . "United States. Air Force." . . "United States. Department of the Air Force," . . . . "United States. Navy." . . "United States. Army." . . "Geology." . . "Geology Alaska Rat Islands." . .