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SON DOONG CAVE
In 1990, a Vietnamese farmer hiding from storm found a 655-feet-high cave where clouds formed above an underground river while a collapsed roof let in sunlight that fed a 165-feet tall forest- World’s largest cave conquered by Harshvardhan Rane: Actor joins 100 Indians who achieved this rare feat
- Going off the grid: 5 uncharted spots to visit from around the world
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