Where is the largest cave in the world?
The largest cave in the world is in Vietnam. Son Doong currently measures a total of 38.5 million cubic meters (about 1.35 billion cubic feet). When it’s officially connected with Thung Cave, it will add an additional 1.6 million cubic meters in volume.
Where is the largest known cave in the world? Mammoth Cave National Park preserves the world's longest known cave system. Mammoth Cave is a limestone labyrinth with more than 400 miles of it explored, and the park estimates another 600 miles in its system
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