Mondo Knows Facts
Hang Son Doong is the largest cave passage by volume
Its biggest cavern is large enough to house a 40-story skyscraper
Discovered in Vietnam's Phong Nha-Ke Bang National Park, Hang Son Doong features a cavern passage over five kilometres long, 200 metres high, and 150 metres wide. The cave was carved by a subterranean river over two million years ago. It contains its own localized weather system, clouds, and jungle growth beneath sinkholes.
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Tags: vietnam, cave, geology
Hang Son Doong is the largest cave passage by volume: the short answers
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- Its biggest cavern is large enough to house a 40-story skyscraper. The figure is taken from UNESCO, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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