Phong Nha - Ke Bang National Park covers a total area of 343,300ha, of which 83.74% covered by primeval forests.

◊ "A Huge Geological Museum"

Phong Nha – Ke Bang is compared to a huge geological museum owning global meaning and value. The major tectonic phases and fault, fold movements of the Earth’s crust 400 million years ago formed in Phong Nha – Ke Bang high mountain ranges, depressed sedimentary basins, underground rivers and grottos in limestone mountains.

◊ Biodiversity and Archaeological Values

Phong Nha - Ke Bang National Park is home to 2,400 species of higher plants; 140 animal species, 356 bird species, 97 reptile species, 47 amphibian species, 162 fish species, and 369 insect species, many of which  are listed in Red Book of Viet Nam and International Union for Conservation of Nature. It also contains a lot of archaeological artifacts from Neolithic period, remains of ancient Vietnamese and Cham people, and many historical sites during the resistance war against French Colonial and American Empire.

◊ "A Kingdom of Caves"

- Phong Nha – Ke Bang is considered as “Kingdom of caves” with about 300 large and small caves, typically grottoes of Phong Nha, Tien Son, Thien Duong; caves of Son Doong, Toi, En, Khe Ry…

- Son Doong Cave in Phong Nha – Ke Bang National Park is evaluated as the largest cave in the world with 200m in height, 200m in width, at least 8.5km in length.

- Thien Duong Grotto is considered as the longest dry cave in Asia with a length of 31.4km. The grotto was installed the over 1km-long wooden stair and white light system to help visitors admire the stalactite blocks with their original colors.

◊ A World Natural Heritage Site

Phong Nha – Ke Bang National Park was recognized as World Natural Heritage Site two times in July 2003 and July 2015 by UNESCO.