Son Doong Cave in Phong Nha-Ke Bang
Son Doong Cave in Phong Nha-Ke Bang National Park is the biggest cave of the world. This cave is accessible only by the private tours. Phong Nha-Ke Bang National Park is about 45 km from the Dong Hoi city. Also from Phong Nha you can travel by bus to Hanoi.
> How to travel from Phong Nha-Ke Bang to Hanoi?














