Phong Nha – Ke Bang National Park is located in Bo Trach district, Quang Binh province, about 50km Northwest of Dong Hoi City.
This is part of the most ancient limestone mountain area in Asia, which was created more than 400 million years ago by various geological activities. In 2003, Phong Nha – Ke Bang was recognized as a World Natural Heritage by UNESCO.
Caves in Phong Nha – Ke Bang National Park are classified into 2 types: dry cave and water cave. Main caves include: Phong Nha, Tien Son, Thien Duong, Son Doong. Phong Nha cave is nearly 8km long with 14 small caves and a sparkling underground river nearly 14km in length. Phong Nha – Ke Bang National Park is home to many archeological vestiges which show proof of human life from the Stone Age.