Central Tangra Mountains
|Elevation||1,700 m (5,600 ft)|
|Length||30 km (19 mi)|
|Width||8 km (5.0 mi)|
|State/Province||South Shetland Islands|
Tangra Mountains (in Bulgarian Тангра Планина, 'Tangra Planina' \'tan-gra pla-ni-'na\) ( ) 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 the Bulgar god Tangra.
Tangra Mountains are 30 km long between Barnard Point and Renier Point, 8 km 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 peaks and slopes of Tangra are heavily glaciated, and drained by the glaciers Huron, Huntress, Ruen Icefall, Peshtera, Charity, Tarnovo Ice Piedmont, Prespa, Macy, Boyana, Srebarna, Magura, Dobrudzha, Ropotamo, Strandzha, Pautalia, Sopot Ice Piedmont, and Iskar.
Camp Academia in the northwestern foothills of Zograf Peak is the perfect gateway to central Tangra Mountains via Catalunyan Saddle (1260 m) to the south and Lozen Saddle (437 m) to the east. Catalunyan Saddle was occupied by a bivouac of the Tangra 2004/05 Exploration team on 14–16 December 2004.
Friesland Ridge 
Friesland Ridge is 15.5 km long from Botev Point in the southwest to Shipka Saddle to the northeast. The summit Mount Friesland ( ) rises to exactly 1700 m. It was accurately measured by GPS in December 2003 by the Omega Foundation expedition led by Damien Gildea, which made the second ascent of Mount Friesland. Other main peaks are St. Boris (1665 m), Simeon (1576 m), St. Cyril (1505 m), Lyaskovets (1473 m), Presian Ridge (1456 m), St. Methodius (1180 m), Academia (1130 m), and Zograf (1011 m). First ascents: Mount Friesland by Francesc Sàbat and Jorge Enrique from Juan Carlos I Base on 30 December 1991; Lyaskovets Peak by L. Ivanov and D. Vasilev from Camp Academia on 14 December 2004; and Zograf Peak by L. Ivanov from Camp Academia on 31 December 2004.
Levski Ridge 
Levski Ridge is 8 km long between Shipka Saddle to the west and Devin Saddle to the east, and 8 km wide between Cherepish Ridge to the north and Christoff Cliff to the south. The summit Great Needle Peak ( ) rises to near 1700 m. Other main peaks are Levski (1430 m), St. Ivan Rilski Col (1350 m), Helmet (1254 m), Serdica (1200 m), Vihren (1150 m), Ongal (1149 m), and Plovdiv (1040 m). First ascents: Ongal Peak and Komini Peak (774 m) by L. Ivanov from Camp Academia on 21 December 2004.
Delchev Ridge 
Delchev Ridge is 10 km long between Devin Saddle to the west and Renier Point to the east. The summit Delchev Peak ( ) rises to 940 m, other main peaks are Ruse (800 m), Asen (800 m), Peter (800 m), Kuber (770 m), Elena (700 m), Spartacus (650 m), Yavorov (640 m), and Paisiy (550 m).
- S. Soccol, D. Gildea and J. Bath. Livingston Island, Antarctica. Scale 1:100000 satellite map. The Omega Foundation, USA, 2004.
- L.L. Ivanov et al. Antarctica: Livingston Island and Greenwich Island, South Shetland Islands (from English Strait to Morton Strait, with illustrations and ice-cover distribution). Scale 1:100000 topographic map. Sofia: Antarctic Place-names Commission of Bulgaria, 2005.
- L.L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. ISBN 978-954-92032-6-4
See also 
- Geographical features on Livingston Island
- Antarctic Place-names Commission
- St. Kliment Ohridski Base
- Camp Academia
- Tangra 2004/05 Expedition
- Bansko Peak
- Tangra Mountains. SCAR Composite Antarctic Gazetteer.
- D. Gildea. 2003 - Omega Livingston Island GPS Expedition. Antarctic Mountains: Climbing in Antarctica.
- L.L. Ivanov, Livingston Island: Tangra Mountains, Komini Peak, west slope new rock route; Lyaskovets Peak, first ascent; Zograf Peak, first ascent; Vidin Heights, Melnik Peak, Melnik Ridge, first ascent, The American Alpine Journal, 2005, 312-315.
- Livingston Island, Climb Magazine, Issue 14, Kettering, UK, April 2006, 89-91
- Antarctic Place-names Commission of Bulgaria
- Tangra 2004/05 Expedition
- Expedition Omega Livingston 2003
- Antarctic Mountains: Climbing in Antarctica
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.
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