Southern Thule is a collection of the three southernmost islands in the South Sandwich Islands: Bellingshausen, Cook, and Thule (Morrell). The Southern Thule territory is claimed by Argentina and the United Kingdom. The island group is barren, windswept, bitterly cold, and uninhabited. It has an extensive exclusive economic zone rich in marine living resources managed as part of the SGSSI fisheries. The Admiralty's Antarctic Pilot says that Southern Thule is part of an old sunken volcano, and is covered with ash and penguin guano.