TIL that The largest cave in the world is in Vietnam and it's so big that it has its own river, jungle and climate.

http://en.wikipedia.org/wiki/S%C6%A1n_%C4%90o%C3%B2ng_Cave



Submitted February 24, 2015 at 02:22PM by pushpendra_singh http://www.reddit.com/r/todayilearned/comments/2wz0i1/til_that_the_largest_cave_in_the_world_is_in/