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Son Doong, The World’s Largest Cave

Hang Son Doong cave, sometimes called simply Son Doong, is a cave in Phong Nha-Ke Bang National Park, Vietnam, that is believed to be the largest discovered till now.

The cave is five times larger than the Phong Nha cave, previously considered the biggest cave in Vietnam. The biggest chamber of Son Doong is over five kilometers in length, 200 meters high and 150 meters wide. With these dimensions, Son Doong overtakes Deer Cave in Malaysia to take the title of the world's largest cave.

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Photos: National Geographic