The Usarp Mountains is a major Antarctic mountain range, lying westward of the Rennick Glacier and trending N-S for about 190 kilometres (118 mi). The feature is bounded to the north by Pryor Glacier and the Wilson Hills. Its important constituent parts include Welcome Mountain, Mount Van der Hoeven, Mount Weihaupt, Mount Stuart, Mount Lorius, Smith Bench, Mount Roberts, Pomerantz Tableland, Daniels Range, Emlen Peaks, Helliwell Hills and Morozumi Range.
Martin Glacier is a glacier, 3 nautical miles (6 km) wide and 9 nautical miles (17 km) long, which flows west and then northwest from the south side of Mount Lupa to the southeast corner of Rymill Bay where it joins Bertrand Ice Piedmont, on the west coast of Graham Land, Antarctica. It was first surveyed in 1936 by the British Graham Land Expedition (BGLE) under John Riddoch Rymill, and was resurveyed in 1948–1949 by the Falkland Islands Dependencies Survey. The glacier was named for James H. Martin, a member of the British Australian and New Zealand Antarctic Research Expedition (1929–1931) under Sir Douglas Mawson, and first mate of the Penola during the BGLE.
Hadley Upland is a triangular shaped remnant plateau with an undulating surface, 1,500 to 1,900 metres, in southern Graham Land, Antarctica. It is bounded by Windy Valley and Martin Glacier, Gibbs Glacier and Lammers Glacier. The existence of this upland was known to the United States Antarctic Service, 1939–41, Finn Ronne and Carl R. Eklund having travelled along Lammers and Gibbs Glaciers in January 1941. The upland was surveyed by the Falkland Islands Dependencies Survey in 1948–50 and 1958, and was named by the UK Antarctic Place-Names Committee after John Hadley, an English mathematician who, at the same time as Thomas Godfrey, independently invented the quadrant, in 1730–31.
Mount Castro is a mountain, 1,630 metres (5,350 ft) high, on the north side of Seller Glacier, 5 nautical miles (9 km) southeast of Mount Gilbert, in the central Antarctic Peninsula. It was photographed from the air by the British Graham Land Expedition in 1937, and by the Ronne Antarctic Research Expedition in 1947. It was surveyed from the ground by the Falkland Islands Dependencies Survey in December 1958, and named by the UK Antarctic Place-Names Committee for João de Castro, a Portuguese navigator who made pioneer experimental investigations of the variation of the magnetic compass.
Mount Bulcke is a bold summit, 1,030 metres (3,380 ft) high, at the end of an ice-covered spur which extends south from the Solvay Mountains, in the southern extremity of Brabant Island, in the Palmer Archipelago. It was discovered by the Belgian Antarctic Expedition under Gerlache, 1897–99, and named by him for a supporter of the expedition.
Mount Gunter is a conspicuous mountain, 1,970 metres (6,460 ft) high, with precipitous black rock cliffs on its west side, rising at the south side of Hariot Glacier, 3 nautical miles (6 km) east of Briggs Peak, on the west side of the Antarctic Peninsula. It was first roughly surveyed by the British Graham Land Expedition in 1936–37, and was photographed by the Ronne Antarctic Research Expedition in November 1947. It was surveyed by the Falkland Islands Dependencies Survey in 1958, and was named by the UK Antarctic Place-Names Committee after Edmund Gunter, an English mathematician whose "line of numbers" (1617) was the first step toward a slide rule; in 1620 he published tables of logarithms, sines and tangents, which revolutionized navigation.
Mount Guernsey is an isolated, mainly ice-covered mountain, 1,250 metres (4,100 ft) high, standing 6 nautical miles (11 km) north of the summit of Mount Edgell, on the west coast of the Antarctic Peninsula. The name "Ile Guernesey" was given in 1909 by the French Antarctic Expedition under Jean-Baptiste Charcot, after the island of Guernsey off the coast of France. The position of "Ile Guernesey" on the French expedition maps does not agree with that of the mountain described above, but from the narrative and sketches by Maurice Bongrain, the expedition surveyor, it has been determined that this mountain was the feature seen in 1909 by Charcot from a position near the center of the entrance to Marguerite Bay. The mountain was surveyed in 1936 by the British Graham Land Expedition, but no name was assigned. It was further surveyed by the Falkland Islands Dependencies Survey in 1948.
Mount Griffiths is an elongated mountain with two prominent peaks of 1,650 and 1,680 metres, standing 5 miles (8 km) northwest of the Wilkinson Peaks and 23 kilometres (14 mi) northwest of Mount Elkins in the Napier Mountains of Enderby Land, Antarctica.
Mount Dudley is a mountain over 1,375 metres (4,510 ft) high, standing at the head of Neny Fjord and bounded on the north and east sides by Neny Glacier, on the west coast of Graham Land. The west side of this mountain was first roughly surveyed in 1936 by the British Graham Land Expedition under John Rymill. It was surveyed in entirety in 1940 by the United States Antarctic Service. The feature was photographed from the air and ground by the Ronne Antarctic Research Expedition (RARE) of 1947–48 under Finn Ronne, who named it for Harold M. Dudley, the executive secretary of the American Council of Commercial Laboratories, Inc. in Washington, D.C. who procured various types of equipment and arranged financial aid for RARE.
Mount Duse is a conspicuous mountain, 505 metres (1,660 ft) high, surmounting King Edward Point on the west side of Cumberland East Bay, South Georgia. It was charted in 1902 by Lieutenant S.A. Duse, cartographer of the Swedish Antarctic Expedition, 1901–04, for whom it is named.
Mount Ethelred is a mainly ice-covered mountain, 2,470 metres (8,100 ft) high, 3 nautical miles (6 km) southeast of Mount Ethelwulf and 8 nautical miles (15 km) inland from George VI Sound, in the Douglas Range of Alexander Island, Antarctica. The mountain was probably first observed by Lincoln Ellsworth, who photographed the east side of the Douglas Range from the air on November 23, 1935; its east face was roughly surveyed in 1936 by the British Graham Land Expedition. It was resurveyed in 1948 by the Falkland Islands Dependencies Survey (FIDS) and named for Ethelred I, Saxon King of England, 865–871. The west face of the mountain was mapped from air photos taken by the Ronne Antarctic Research Expedition, 1947–48, by D. Searle of the FIDS in 1960. Mount Ethelred is the seventh highest peak of Alexander Island, proceeded by Mount Calais.
Mount Freed is a mountain, 2,120 metres (6,960 ft) high, that surmounts the divide between Champness Glacier and McCann Glacier, in the southern part of the Bowers Mountains of Victoria Land, Antarctica. The topographical feature was first mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–62, and was named by the Advisory Committee on Antarctic Names for Commander M.G. Freed, legal officer on the staff of the Commander, U.S. Naval Support Force, Antarctica, 1966–68. The mountain lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.
Mount Gevers is a rock peak, 1,480 metres (4,860 ft) high, in the Hays Mountains of the Queen Maud Mountains of Antarctica, standing at the north side of Cappellari Glacier at the point where it enters Amundsen Glacier. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–64, and was named by the Advisory Committee on Antarctic Names for T.W. Gevers of the University of the Witwatersrand (Johannesburg), a geologist at McMurdo Station in 1964–65.
Mount Medina is a prominent ice-covered mountain which rises to 1,845 metres (6,050 ft) from the northeastern part of Hadley Upland and overlooks the head of Gibbs Glacier in southern Graham Land, Antarctica. It was photographed by the Ronne Antarctic Research Expedition in November 1947, and was surveyed by the Falkland Islands Dependencies Survey in 1958. The mountain was named by the UK Antarctic Place-Names Committee after Pedro de Medina (1493–1567), Spanish Cosmographer Royal, who wrote Arte de Navegar, an important manual of navigation.
Mount McCarthy is the easternmost peak, 1,860 metres (6,100 ft) high, of the Porthos Range in the Prince Charles Mountains of Antarctica. It was first visited by an Australian National Antarctic Research Expeditions southern party led by W.G. Bewsher in December 1956, and was named by the Antarctic Names Committee of Australia for James W. McCarthy, senior meteorologist and second in charge at Mawson Station in 1956.
Relay Hills is a group of low, ice-covered hills, mainly conical in shape, between Mount Edgell and Kinnear Mountains in western Antarctic Peninsula. First roughly surveyed from the ground by British Graham Land Expedition (BGLE), 1936-37. Photographed from the air by Ronne Antarctic Research Expedition (RARE), November 1947. Resurveyed by Falkland Islands Dependencies Survey (FIDS), November 1958. The name, applied by the United Kingdom Antarctic Place-Names Committee (UK-APC), arose because both the BGLE and the FIDS sledging parties had to relay their loads through this area to the head of Prospect Glacier.
Mount Langway is a coastal mountain, 760 metres (2,500 ft) high, located 2.5 nautical miles (5 km) southwest of Mount LeMasurier in the Ickes Mountains of Marie Byrd Land, Antarctica. The mountain was first photographed from aircraft of the United States Antarctic Service, 1939–41, and it was named by the Advisory Committee on Antarctic Names for Chester C. Langway, a United States Antarctic Research Program glaciologist at Byrd Station, 1968–69.
Lekander Nunatak is a nunatak, 1,815 metres (5,950 ft) high, standing along the southwest edge of Mackin Table, 2 nautical miles (4 km) northeast of Bessinger Nunatak, in the south of the Patuxent Range, Pensacola Mountains, Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1956–66, and was named by the Advisory Committee on Antarctic Names for Bryant A. Lekander, a cook at South Pole Station, winter 1960.
Mount Leo is an isolated mountain, 1,270 metres (4,170 ft) high, at the southeast margin of Forster Ice Piedmont on the west side of the Antarctic Peninsula. The mountain has steep rock cliffs on its south side. It was first roughly surveyed by the British Graham Land Expedition, 1936–37, was photographed from the air by the Ronne Antarctic Research Expedition, 1947, and resurveyed by the Falkland Islands Dependencies Survey, 1958. The name applied by the UK Antarctic Place-Names Committee is suggestive of the shape of the feature, which resembles a recumbent lion.
Mount Liavaag is a mountain, 1,820 metres (5,970 ft) high, between Mount Holmboe and the Holth Peaks near the northern end of the Sentinel Range in the Ellsworth Mountains of Antarctica. It was discovered by Lincoln Ellsworth on his trans-Antarctic flight of November 23, 1935, and was named by the Advisory Committee on Antarctic Names for First Mate Liavaag of the Wyatt Earp in 1935–36, and also a member of Ellsworth's two earlier Antarctic expeditions.
