airhumor: At more than 200m high, 150m wide and 5km long, the Hang Son Doong cave in Vietnam is so big it has its own river, jungle and climate.

Tuesday, 8 September 2015

At more than 200m high, 150m wide and 5km long, the Hang Son Doong cave in Vietnam is so big it has its own river, jungle and climate.

http://ift.tt/1NgUOAO via /r/pics http://ift.tt/1NgUQZq

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