Son Doong Cave – coordinates 17°27’25.88″North 106°17’15.36″East, in Son Trach commune, Bo Trach district, Quang Binh province– is the largest natural cave in the world. This cave is located in the Phong Nha – Ke Bang cave complex. The cave is part of an underground system that connects to more than 150 other caves in Vietnam located near the border...Read More