Nordwestliche Insel Mountains
Geography
Continent	Antarctica
Region	Queen Maud Land
Range coordinates	71°27′S 11°33′E / 71.450°S 11.550°E / -71.450; 11.550 (Nordwestliche Insel Mountains)

Nordwestliche Insel Mountains (71°27′S 11°33′E / 71.450°S 11.550°E / -71.450; 11.550 (Nordwestliche Insel Mountains)) is a small, detached group of mountains, island-like in appearance, and forming the northern extremity of the Humboldt Mountains, in the Wohlthat Mountains of Queen Maud Land, Antarctica. They lie at the northwest extremity of the Wohlthat Mountains.^[1]

The Nordwestliche Insel Mountains were discovered by the German Antarctic Expedition (1938–1939) (GerAE) under Alfred Ritscher, and named Nordwestliche Insel (northwest island).^[1] The name Nordvestøya is used by Norway in the Norway Gazetteer. It is described there as being north of Humboldtfjella (Humboldt Mountains) in the northwest part of Wohlthatmassivet (Wohlthat Mountains) in Fimbulheimen.^[2]

Nearby features include:

71°18′S 11°27′E / 71.300°S 11.450°E / -71.300; 11.450. A group of rocks lying 8 nautical miles (15 km; 9.2 mi) north of Nordwestliche Insel Mountains. Discovered and photographed by the GerAE, 1938-39. Mapped by the Soviet Antarctic Expedition, 1960-61, and named for that nation's Arctic Institute.^[3]

71°18′S 11°27′E / 71.300°S 11.450°E / -71.300; 11.450. Rock lying 0.9 nautical miles (1.7 km; 1.0 mi) south of Pål Rock in the Arkticheskiy Institut Rocks. Discovered and photographed by the GerAE, 1938-39. Mapped by Norway from air photos and surveys by the Sixth Norwegian Antarctic Expedition (NorAE), 1956-60, and named Oskeladden.^[4][a]

71°18′S 11°26′E / 71.300°S 11.433°E / -71.300; 11.433. Rock lying between Per and Oskeladden Rocks in the Arkticheskiy Institut Rocks. Discovered and photographed by the GerAE, 1938-39. Mapped by Norway from air photos and surveys by NorAE, 1956-60, and named Pål (Paul).^[5]

71°17′S 11°26′E / 71.283°S 11.433°E / -71.283; 11.433. Rock lying 0.8 nautical miles (1.5 km; 0.92 mi) north of Pal Rock in the Arkticheskiy Institut Rocks. Discovered and photographed by the GerAE, 1938-39. Mapped by Norway from air photos and surveys by NorAE, 1956-60, and named Per (Peter).^[6]

71°27′S 11°58′E / 71.450°S 11.967°E / -71.450; 11.967. A linear mountain, 1,850 metres (6,070 ft) high, trending in a north–south direction for 6 nautical miles (11 km; 6.9 mi), standing 5 nautical miles (9.3 km; 5.8 mi) east of Nordwestliche Insel Mountains. This mountain was discovered by the GerAE, 1938-39, who gave the name Sphinx to its northern peak. The name was extended to this mountain by NorAE, 1956-60, and the Soviet Antarctic Expedition, 1960-61, who referred to it as Sfinksen (the sphinx) and Gora Sfinks (sphinx mountain), respectively. The recommended spelling has been chosen to agree with the original German form.^[7]

71°25′S 11°57′E / 71.417°S 11.950°E / -71.417; 11.950. The peak, 1,630 metres (5,350 ft) high, at the northern end of Sphinx Mountain. Discovered by the GerAE under Ritscher, 1938-39, who named it Sphinxkopf (sphinx head) because of its appearance.^[7]