World's Biggest Cave Found in Vietnam

A British caver wades through Vietnam's Son Doong cave, Earth's largest known cave passage, according to a survey team.

A massive cave recently uncovered in a remote Vietnamese jungle is the largest single cave passage yet found, a new survey shows.
At 262-by-262 feet (80-by-80 meters) in most places, the Son Doong cave beats out the previous world-record holder, Deer Cave in the Malaysian section of the island of Borneo.

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