Hang Sơn Đoòng
Largest cave passage in the world, located in Quảng Bình, Vietnam / From Wikipedia, the free encyclopedia
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Sơn Đoòng cave (Vietnamese: hang Sơn Đoòng, IPA: [haːŋ˧ ʂəːn˧ ɗɔ̤ŋ˨˩]), in Phong Nha-Kẻ Bàng National Park, Bố Trạch District, Quảng Bình Province, Vietnam, is the world's largest natural cave.[1]
Sơn Đoòng cave | |
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Hang Sơn Đoòng | |
Location | Quảng Bình Province, Vietnam |
Coordinates | 17°27′25″N 106°17′15″E |
Depth | max. 150 metres (490 ft) |
Length | approx. 9 kilometres (5.6 mi) |
Discovery | 1991 [AD] by Hồ Khanh |
Geology | Permo-Carboniferous limestone |
Entrances | 2 |
Hazards | Underground river |
Cave survey | 2009, British/Vietnamese |
Website | https://sondoongcave.info |
Located near the Laos–Vietnam border, Hang Sơn Đoòng has an internal, fast-flowing subterranean river and the largest cross-section of any cave, worldwide,[2][3] believed to be twice that of the next-largest passage. It is the largest known cave passage in the world by volume.
Its name, Hang Sơn Đoòng, is variously translated from Vietnamese as "cave of the mountain river"[4] or "cave of mountains behind Đoòng [village]".[disputed – discuss]
As a solutional cave, it was formed in soluble limestone[5] and is believed to be between 2 and 5 million years old.[6]