National Geographic – The world’s biggest cave 2010

Hang Son Doong – Son Trach in Bo Trach district, Quang Binh province, is the largest natural caves in the world. The cave is located in Vietnam, Phong Nha-Ke Bang near the border of Laos. Limestone mountains of the Vietnam-Laos border have many caves, such as the Phong Nha that has been known for long. Son Doong cave was discovered in 1991 when a local called Ho Khanh, stumbled up on it when trying to avoid the rain. In the […]

Continue reading »