Han Son Doong cave in Vietnam is a world of its own. The cave is so huge, that it has two forests and clouds of its own. Only 450 visitors are allowed to tour the cave each year, with only one operator offering the experience.
Han Son Doong cave in Vietnam is a world of its own. The cave is so huge, that it has two forests and clouds of its own. Only 450 visitors are allowed to tour the cave each year, with only one operator offering the experience.