National Park Phong Nha - Ke Bang. A large can to make long border the Republic of Democratic People's Lao geographic area is very diverse with many beauty spread to include 65 km of caves and underground rivers. Conservation area is covered by tropical forest, with the diversity of many animal species and rare biodiversity. The preliminary survey of the animal in us is the only 461 animals, including vertebrate form 65. Vuong Quoc Phong Nha - Ke Bang is written to the UNESCO list of world heritage 3 months 7 days in 2003.