The Vietnamese Cave So Large It Has Its Own Weather
Could’ve been one of the seven natural wonders of the world
Vietnam’s Son Doong Cave hasn’t been on the tourist map for long. A local farmer discovered it in 1991, but it wasn’t until 2009 that it was explored and mapped. Son Doong Cave is by far the largest cave on Earth. Its total volume is an astonishing 1.35 billion cubic feet. It…