' ( (); 'cave of the mountain river' or 'mountain cave of Đoòng [village]' 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, and is located near the Laos–Vietnam border. Inside is a large, fast-flowing subterranean river. It was formed in Carboniferous/Permian limestone.
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Hang Sơn Đoòng
Hours
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Parking
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Pets Allowed
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Restrooms
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Wifi
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Wheelchair Accessible
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Credit Cards Accepted