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Sơn Đoòng cave : ウィキペディア英語版 | Sơn Đoòng Cave
Sơn Đoòng Cave (''hang Sơn Đoòng'', "Mountain River cave" in Vietnamese)〔 is a solutional cave in Phong Nha-Kẻ Bàng National Park, Bố Trạch District, Quảng Bình Province, Vietnam. it has the largest known cave passage cross-section in the world,〔(【引用サイトリンク】url=http://news.nationalgeographic.com/news/2009/07/090724-biggest-cave-vietnam/ )〕〔''Guinness World Records 2013'', Page 032. ISBN 9781904994879〕 and is located near the Laos–Vietnam border. Inside is a large, fast-flowing subterranean river. It was formed in Carboniferous/Permian limestone.〔(【引用サイトリンク】url=http://library.wur.nl/isric/kaart/origineel/XA2005_GE.jpg )〕 ==Discovery== Sơn Đoòng Cave was found by a local man named Hồ-Khanh in 1991. The whistling sound of wind and roar of a rushing stream in the cave heard through the entrance as well as the steep descent prevented the local people from entering the cave. Only in 2009 did the cave become internationally known after a group of scientists from the British Cave Research Association, conducted a survey in Phong Nha-Kẻ Bàng from 10 to 14 April 2009. Their progress was stopped by a large, high calcite wall,〔 which was named the Great Wall of Vietnam. It was traversed in 2010 when the group reached the end of the cave passage.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sơn Đoòng Cave」の詳細全文を読む
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