This story appears in the March 2019 issue of National Geographic magazine ... They had crawled into Cave of the Winds, deep inside a cave system known as Clearwater, where they would search ...
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Hang Son Doong: The world's biggest cave, so 'outrageous in size' it fits 2 jungles and the 'Great Wall of Vietnam'But researchers recently discovered the cave is even bigger than that. A diving expedition in 2019 revealed that Son Doong is ...
This story appears in the June 2019 issue of National Geographic magazine ... a 200-foot barrier to be conquered by both ladder and rope climbing. In a cave there’s no way to get a signal.
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