Natural wonder · Vietnam
Hang Sơn Đoòng
Largest cave passage in the world, located in Quảng Trị, Vietnam
About Hang Sơn Đoòng
Sơn Đoòng Cave, in Phong Nha–Kẻ Bàng National Park, Quảng Trị province, Vietnam, is the world's largest natural cave. 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, 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 translated from Vietnamese as "cave of the mountain behind Đoòng".
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Best time to visit
Midday highs, based on last year's weather. Green months have comfortable temperatures and few rainy days.
On the map
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Questions about Hang Sơn Đoòng
Where is Hang Sơn Đoòng?
Hang Sơn Đoòng is in Vietnam. The nearest city is Đồng Hới, about 36 km away.
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