Sondoong cave, Asia's most beautiful cave

Son Doong cave in Quang Binh, Vietnam is the largest in the world, has opened to tourists.

Along the algae-covered road maze, two adventurers Deb and Howard Limbert go through natural sculptures formed from calcium-rich water flowing in the cave. Photo: National Geographic.

Tour price is 3000 USD/ person.

Son Doong cave 9km. Before discovery of Son Doong cave, Deer Cave in Borneo cave record holder for the world's largest 5 km long, 200 meters high and 150 meters wide.

Son Doong cave is located near the border of Vietnam - Laos, in the national park Phong Nha - Ke Bang.

Surrounding forest and remote locations Son Doong help not detected in a long time.

The world's biggest cave