Seguam Island

Seguam Island is an uninhabited island in the Aleutian chain of Alaska, United States, forming part of the central Aleutian island groups. It is of volcanic origin and characterized by rugged terrain.

The island offers active volcanic landforms, steep coasts and seabird colonies; visits are limited to scientific teams and experienced mariners because of remoteness and rough sea conditions. There are no visitor services or settlements.

Like other Aleutian islands, Seguam has a natural history tied to volcanic activity and maritime subsistence by indigenous Aleut people historically, but it has no permanent modern population and has been used primarily for occasional scientific work and navigation references.

Seguam lies within the Aleutian Islands chain in western Alaska, positioned in open ocean between other Andreanof-type islands and accessed only by sea or specialized aircraft.

• Volcanic island: Volcanic in origin with rugged relief and limited landing sites; the island is uninhabited and visited mainly by researchers and itinerant mariners.