The Admiralty Mountains (alternatively Admiralty Range) is a large group of high mountains and individually named ranges and ridges in northeastern Victoria Land, Antarctica. This mountain group is bounded by the Ross Sea, the Southern Ocean, and by the Dennistoun, Ebbe, and Tucker glaciers. The mountain range is situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare. It was discovered in January 1841 by Captain James Ross, who named them for the Lords Commissioners of the Admiralty under whose orders he served. The Admiralty Mountains are divided into the Dunedin Range, Homerun Range, and Lyttelton Range. Mountains and peaks This range includes the following mountains and peaks: Mount Achilles Mount Achilles is a prominent pyramidal mountain rising from the divide between Fitch Glacier and Man-o-War Glacier. Named by New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1957–58, after the former New Zealand cruiser . Mount Adam Mount Adam is situated WNW of Mount Minto. Discovered in January 1841 by Captain Ross who named this feature for Vice Admiral Sir Charles Adam, a senior naval lord of the Admiralty. Mount Ajax Mount Ajax rises 1.5 km (1 mi) WSW of Mount Royalist. Named by the New Zealand GSAE, 1957–58, after HMNZS Ajax. The mountain is one of several in this area named for New Zealand ships. Mount Bevin Mount Bevin is a prominent sharply pointed mountain at the western side of the head of Murray Glacier. The mountain stands 2 miles (3.2 km) west-northwest of Mount Sabine. Named by Advisory Committee on Antarctic Names (US-ACAN) (2004) after Anthony (Tony) J. Bevin, Surveyor-General of New Zealand, and Chairman of the New Zealand Geographic Board, 1996–2004, with responsibility for New Zealand surveying and place naming in Antarctica. Mount Black Prince Mount Black Prince is composed of dark colored rock, which tends to create an imposing appearance. Located west of Mount Ajax. Named by the New Zealand Geological Survey Antarctic Expedition (NZ GSAE), 1957–58, for its appearance and also for the New Zealand Cruiser HMNZS Black Prince. Mount Gilruth Mount Gilruth is a mostly ice-covered mountain (3,160 m) 4.5 nautical miles (8 km) east-northeast of Mount Adam. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-63. Named by Advisory Committee on Antarctic Names (US-ACAN) for Robert R. Gilruth of the National Aeronautics and Space Administration, a visitor at McMurdo Station, 1966-67. Mount