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Vietnam’s Doong Cave has a jungle, river, and could contain a 40-story skyscraper.
Knownsense posted by Space Invader on
Words don’t do it justice, but here’s a history lesson anyway. A local Vietnamese man discovered the cave’s entrance in 1991, but no one explored the cave until British explorers did so in 2009. John Spies shares a glimpse of the cave through his photo lens. Know more.
