This cave is so big that an entire city can be built inside ... As the tale goes, Son Dung Cave was discovered in 1991 by a local woodcutter in Vietnam. After which scientists investigated Son ...

Hang Son Doong is in Phong Nha-Ke Bang National Park in Vietnam, near the border with Laos and is the world's largest natural ...

The group spent four days wading through hip-high waters before traversing through and camping in soaring caves. At the end of Hang Son Doong stood the Great Wall of Vietnam, a 200-foot barrier to ...

Discover the geology and stunning landscapes of Vietnam in this fascinating tour from Hanoi to Hoi An. Experience tropical jungles, limestone caves, blissful villages and amazing feats of ...

This cave is so big that an entire city can be built inside ... As the tale goes, Son Dung Cave was discovered in 1991 by a local woodcutter in Vietnam. After which scientists investigated Son ...