GEOGRAPHIC NAMES OF ANTARCTICA 



TWIN PEAKS : two sharply defined peaks, about 

 2,300 ft. in el., standing together about 1.5 mi. 

 N. of Mt. Taylor and 2 mi. W. of the head of Hope 

 Bay, at the NE. end of Palmer Pen.; in 63°24'S., 

 57°07'W. Disc, by the SwedAE, 1901-4, under 

 Nordenskjold. Named by the FIDS following their 

 survey of the area in 1946. 



TWIN PINNACLES: rock about 75 ft. in el. 

 marked by two summits, lying 0.1 mi. NE. of Cape 

 Lions Rump, at the W. side of the entrance to 

 King George Bay, in the South Shetland Is.; in 

 62°07'S., 58°06'W. Charted and named during 

 1937 by DI personnel on the Discovery II. 



TWINS, THE: two close-lying rocks, about 0.5 

 mi. S. of the S. end of Monroe I., off the W. end 

 of Coronation I., in the South Orkney Is.; in 

 60°37'S., 46°04'W. Charted and named in 1933 

 by DI personnel on the Discovery II. 



TWITCHER GLACIER: glacier, about 4 mi. long, 

 which flows eastward to the E. coast of South 

 Georgia, immediately S. of Iris Bay; in 54°43'S., 

 35°56'W. The glacier was surveyed in 1951-52 by 

 the SGS. Named by the Br-APC after John 

 Montagu, fourth Earl of Sandwich, First Lord of 

 the Admiralty, 1771-82, who was popularly known 

 as "Jemmy Twitcher." 



TWITCHER ROCK: rock about 180 ft. in el. 

 lying in Douglas Str., about 0.7 mi. NE. of Hewison 

 Pt., Thule I., in the South Sandwich Is.; in 

 59°28'S., 27°14'W. The rock was disc, by a Russ. 

 exp. under Bellingshausen in 1820. It was charted 

 in 1930 by DI personnel on the Discovery II, who 

 named it for John Montagu, fourth Earl of Sand- 

 wich, who was popularly known by the nickname 

 "Jemmy Twitcher." 



Two Hammock Insel: see Two Hummock Island. 



TWO HUMMOCK ISLAND: ice-covered island, 

 about 5 mi. long, in a N.-S. direction, and 2 mi. 

 wide, conspicuous because of two rocky summits 

 about 2,500 ft. in el., lying some 12 mi. WSW. of 

 Cape Sterneck, off the W. coast of Palmer Pen.; in 

 64°08'S., 6r40'W. This name has appeared on 

 maps for over 100 years and its usage has become 

 established internationally. Not adopted: He des 

 deux Hummocks [French], Two Hammock Insel 

 [German] . 



Two Hummock Island: see Two Summit Island. 



TWO-STEP CLIFFS: east face of an almost flat- 

 topped sedimentary block, about 2,200 ft. in el., 

 situated immediately E. of Mars Gl. and close N. 

 of the mouth of Saturn Gl., on the E. coast of 

 Alexander I Island; in 71°54'S., 68°13'W. The 



coast in this vicinity was first explored from the 

 air and partially photographed by Lincoln Ells- 

 worth on Nov. 23, 1935. These cliffs were first 

 roughly surveyed from the ground in 1936 by the 

 BGLE under Rymill. Resurveyed in 1940-41 by 

 the US AS, who used the names Two Step Moun- 

 tains and Table Mountain for this feature. The 

 name Two-Step Cliffs derives from the original 

 name used by US AS, and was proposed by FIDS 

 following surveys in 1949 as being particularly de- 

 scriptive of this feature. Not adopted: Table 

 Mountain, Two Step Mountains. 



Two Step Mountains: see Two-Step Cliffs. 



TWO SUMMIT ISLAND: small island marked by 

 two prominent summits, lying at the E. side of the 

 entrance to Fildes Strait in the South Shetland Is.; 

 in 62°15'S., 58°57'W. It was named Two Hum- 

 mock Island by DI personnel following their survey 

 in 1935, but this name has been rejected because 

 of probable confusion with Two Hummock Island 

 in the N. entrance to De Gerlache Strait. The 

 name Two Summit Island, which is equally de- 

 scriptive of the feature, was recommended by the 

 Br-APC in 1954. Not adopted: Two Hummock 

 Island. 



TYRRELL, MOUNT: mountain with two sum- 

 mits, the highest about 4,300 ft. in el., standing 3 

 mi. inland from the E. coast of Alexander I Island, 

 on the E. side and near the mouth of Toynbee Gl.; 

 in 69°38'S., 69°31'W. First photographed from the 

 air in 1937 by the BGLE under Rymill. Surveyed 

 from the ground in 1948 by the FIDS and named 

 by them for George W. Tyrrell, British geologist at 

 Glasgow University. 



UFS ISLAND : rocky island about 2 mi. in diam- 

 eter and about 900 ft. in el., lying at the E. side of 

 Howard Bay, off Mac-Robertson Coast; in about 

 67°28'S., 61°09'E. Cape Simpson, the N. end of 

 this island, was disc, by the BANZARE under 

 Mawson on about Feb. 18, 1931, but the island 

 nature of this feature was first recognized by Nor- 

 wegian cartographers, working from aerial photo- 

 graphs taken by a Nor. exp. under Christensen in 

 January-February 1937. The word "Ufs" means 

 bluff in Norwegian. 



Ufsoyvdgen: see Howard Bay. 



UHLIG PEAK: mountain spur about 10,500 ft. 

 in el., lying close NE. of Kleinschmidt Peak and 

 projecting N. from the edge of the polar plateau 

 in New Schwabenland; in about 73°10'S., 3°20'W. 

 Disc, by the GerAE under Ritscher, 1938-39, and 

 named for Karl Uhlig, chief engineer of the expe- 

 dition. 



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