Great Needle Peak in the context of "Mount Friesland"

Tangra Mountains (in Bulgarian Тангра планина, 'Tangra planina' \'tan-gra pla-ni-'na\) (62°40′00″S 60°06′00″W / 62.66667°S 60.10000°W / -62.66667; -60.10000) form the principal mountain range of Livingston Island in the South Shetland Islands, Antarctica. The range had been nameless until 2001, when it was named after Tengri (Bulgarian Tangra), "the name of the ancient Bulgarian god."

Tangra Mountains are 32 kilometres (20 mi) long between Barnard Point and Renier Point, 8.5 kilometres (5.3 mi) wide, and are bounded by Moon Bay and Huron Glacier to the north, Huntress Glacier to the northwest, False Bay to the west, and Bransfield Strait to the southeast, and is linked to Bowles Ridge by Wörner Gap, and to Pliska Ridge by Nesebar Gap. The mountain is divided in three principal ridges: Friesland Ridge in the west, Levski Ridge in the centre, and Delchev Ridge in the east.

The Tangra 2004/05 Expedition was commissioned by the Antarctic Place-names Commission at the Ministry of Foreign Affairs of Bulgaria, managed by the Manfred Wörner Foundation, and supported by the Bulgarian Antarctic Institute, the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences, Bulgarian Posts, Uruguayan Antarctic Institute, Peregrine Shipping (Australia), and Petrol Ltd, TNT, Mtel, Bulstrad, Polytours, B. Bekyarov and B. Chernev (Bulgaria).

Sofia Peak (Bulgarian: връх София, romanized: vrah Sofiya, IPA: [ˈvrɤx ˈsɔfijɐ]) is the ice-covered peak rising to 1655 m in Levski Ridge, central Tangra Mountains on Livingston Island in the South Shetland Islands, Antarctica, 470 m northwest of the summit point of Great Needle Peak with which it forms a twin peak. The feature is named after the capital city of Bulgaria.

Bowles Ridge (Bulgarian: хребет Боулс, romanized: hrebet Bouls, IPA: [ˈxrɛbɛd ˈbɔuɫs]) is the central ridge of eastern Livingston Island. The ridge extends 6.5 km in the east-west direction and is 1.5 km wide. The summit of the ridge is Mount Bowles which rises to 822m and is located 9.77 km northwest of Great Needle Peak, 6.08 km north by west of Mount Friesland, 8.77 km east-northeast of St. Kliment Ohridski base and 9.25 km south by west of Miziya Peak.

Bowles Ridge is bounded by Kaliakra Glacier and Struma Glacier to the north, by Perunika Glacier to the west and southwest and by Huron Glacier to the southeast and east. It is linked to Friesland Ridge of the Tangra Mountains by Wörner Gap, to Hemus Peak by Dimov Gate, and to Melnik Ridge by Yankov Gap. The ridge is crossed by Omurtag Pass and Pirdop Gate.

Levski Ridge (Bulgarian: Хребет Левски \'hre-bet 'lev-ski\) is the central ridge of the Tangra Mountains, Livingston Island. Its summit, Great Needle Peak rises to 1,680m and is the second highest summit of the island after Mount Friesland.

The ridge extends nearly 8 km between Shipka Saddle to the west and Devin Saddle to the east, and the same distance between Cherepish Ridge to the north and Christoff Cliff to the south. It is bounded by Huron Glacier to the north, Iskar Glacier to the northeast, Macy Glacier and Boyana Glacier to the southwest, and Srebarna Glacier and Magura Glacier to the southeast.