Huron Glacier in the context of "Levski Ridge"

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.

Plana Peak (Bulgarian: връх Плана, romanized: vrah Plana, IPA: [ˈvrɤx ˈpɫanɐ]) is a mostly ice-covered peak on the Levski Ridge, Tangra Mountains, Livingston Island in the South Shetland Islands, Antarctica. Surmounting Huron Glacier to the north and its tributaries to the east and west. First ascent by D. Boyanov, N. Petkov and A. Shopov on 8 January 2015. The peak is named after Plana Mountain in Western Bulgaria.

Mount Friesland is a mountain rising to 1,700.2 metres (5,578 ft) in the homonymous Friesland Ridge, one of the two summits of Tangra Mountains and Livingston Island in the South Shetland Islands, Antarctica along with neighbouring St. Boris Peak. Its north rib is connected to Pliska Ridge by Nesebar Gap on the west, and to Bowles Ridge by Wörner Gap on the north. On the east, Mount Friesland is connected to Presian Ridge and further on to Catalunyan Saddle and Lyaskovets Peak. On the south-southwest, it is connected by a short saddle to ‘The Synagogue’, a sharp-peaked rock-cored ice formation abutting St. Boris Peak. The peak is heavily glaciated and crevassed, surmounting Huntress Glacier to the west, Perunika Glacier to the north-northwest, Huron Glacier to the northeast and Macy Glacier to the southeast. The local weather is notoriously unpleasant and challenging; according to the seasoned Antarctic mountaineer Damien Gildea who climbed in the area, "just about the worst weather in the world".

Lyaskovets Peak (Bulgarian: връх Лясковец, romanized: vrah Lyaskovets, IPA: [ˈvrɤx ˈʎaskovɛt͡s]) is the easternmost peak of Friesland Ridge in the Tangra Mountains, eastern Livingston Island and has an elevation of 1,473 m. The peak is bounded by Catalunyan Saddle on the west and Shipka Saddle on the east, and is heavily glaciated and crevassed, with precipitous western, southern and eastern slopes. It surmounts Huron Glacier to the northwest and northeast, and Macy Glacier and Brunow Bay area to the south. Its northern offshoot forms Zograf Peak, and is linked to Lozen Nunatak, Erma Knoll and Aheloy Nunatak in Huron Glacier.

The peak is named after Lyaskovets, a town in central northern Bulgaria.

Perunika Glacier (Bulgarian: ледник Перуника, romanized: lednik Perunika, IPA: [ˈlɛdnik pɛroˈnikɐ]) is an 8 km long and 3 km wide (average) roughly crescent-shaped glacier in eastern Livingston Island in the South Shetland Islands, Antarctica situated east of Pimpirev Glacier, south of Saedinenie Snowfield, southwest of Kaliakra Glacier, west of Huron Glacier, and north of Balkan Snowfield and the head of Huntress Glacier.

Its head is bounded by Pliska Ridge to the south-southwest, Nesebar Gap to the south, Wörner Gap to the east, and Bowles Ridge to the north-northeast. It drains northwestwards between Burdick Ridge and Bowles Ridge, then north of Rezen Knoll turns west-southwest and flows into the head of Emona Anchorage between Bulgarian Beach and Pimpirev Beach.

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).

Helmet Peak is a conspicuous peak rising to 1,254 metres (4,114 ft) in Levski Ridge, Tangra Mountains on Livingston Island in the South Shetland Islands, Antarctica just southward of the mouth of Huron Glacier. It is bounded by Devnya Valley to the west, Iskar Glacier to the northeast, and Magura Glacier to the southeast, and has precipitous west and east slopes. It was named by Discovery Investigations personnel during the period 1926–32.

Kuzman Knoll (Kuzmanova Mogila \'kuz-ma-no-va mo-'gi-la\) is a solitary ice-covered knoll rising to 620 m in eastern Livingston Island in the South Shetland Islands, Antarctica. The knoll forms a conspicuous landmark in Wörner Gap area, overlooking Huron Glacier and upper Perunika Glacier. It was named after Kuzman Tuhchiev, participant in the 1993/94 Bulgarian Antarctic campaign and base commander at St. Kliment Ohridski during the 1994-96 seasons.

The feature is named ‘Tukhchiev Knoll’ by the U.S. and British Antarctic naming committees; "Kuzman Knoll" is the official Bulgarian name, which is established among the Spanish and Bulgarian scientists working in the area.

Great Needle Peak (Bulgarian: Голям Иглен връх, romanized: Golyam Iglen vrah, IPA: [ɡoˈʎam ˈiɡlɛn ˈvrɤx]; variant name in Spanish: pico Falsa Aguja, lit. 'False Needle Peak') is the summit of the central Levski Ridge in Tangra Mountains on Livingston Island, Antarctica. Rising to 1,679.5 m, it is the third highest peak of both the mountains and the island after Mount Friesland (1700.2 m) and St. Boris Peak (1685 m). Great Needle Peak surmounts Huron Glacier and its tributary draining Devnya Valley to the north, Magura Glacier to the east, Srebarna Glacier to the south, and Macy Glacier to the southwest.

Moon Bay is a bay 7 nautical miles (13 km) wide which recedes 4 nautical miles (7 km) between Edinburgh Hill and Renier Point, on the east side of Livingston Island, in the South Shetland Islands off Antarctica. The glaciers Sopot Ice Piedmont, Iskar, Huron, Struma, Kaliakra, Panega and Debelt feed the bay. Both Half Moon Island and Elemag Reef lie in Moon Bay.

The bay was known to sealers in the area as early as 1821. It was recharted in 1935 by Discovery Investigations personnel on the Discovery II, and probably named by them for nearby Half Moon Island, which lies in the entrance to the bay.