A cave in Vietnam is so large it has its own climate
Vietnam's Son Doong cave is so cavernous that it contains a lush jungle and a localized weather system complete with its own clouds and mist.
Son Doong is the world's largest cave by volume, stretching over five miles long with sections reaching 650 feet high. These massive dimensions allow clouds to form inside the chambers, trapped by the temperature difference between the cave air and the outside world.
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