Phong Nha, a mountain landscape located in Bo Trach District, 50km further northwest from center of  Dong Hoi, Quang Binh Province.

Phong Nha is famous with the unique spectacular cave systems not only in Vietnam but also in the world. It attracts environmental scientists and cave researchers as a favorable destination. As for tourism, Phong Nha provides hiking and trekking tours to the primary forests, adventure tours,etc.
Some outstanding tours as follow:
– Hang Son Doong : Firstly, explored by the local man Mr.Ho Khanh in 1990. In 2009, he shared and support the 2 staffs in British Cave Research Association to re-explore the cave again. Son Doong cave has been recognized as the largest and longest in the world. The adventure tours last for 6 days 5 nights including trekking activities, swimming inside the caves, climbing limestone mountains, camping and enjoying food with jungles,etc.
– Phong Nha and Thien Duong (Paradise) caves: these 2 caves systems are suitable for  “one- day-length” tours
– Trekking tours to explore primary forests and biking in the forest area of Phong Nha Ke Bang with many options for 1, 2 and even 3 days depending on your need