15. Son Doong Cave
The Son Doong Cave is situated in Vietnam. It is the largest cave with 9 kilometers length, 200 meters width and 150 meters height. No doubt, the size of the cave is its main attraction. Besides that, this cave is filled with countless surprising things like isolated ecosystems, weather systems and geological formations. Containing river, jungles and whole cave ecosystem, this is the most amazing cave in the world.
Image Credit: nationalgeographic
Taking over millions of years to form, these caves are truly blessed with surprises. The above mentioned caves have something more to offer than adventure alone. You will be confused as to which cave to choose for your next holiday.