http://www.youtube.com/watch?v=LSP2uD3CD7Y
http://www.world-heritage-site.com/?p=5802 The forerunner of Phong Nha – Ke Bang National Park was the Phong Nha Natural Reserve formed in 1992.
http://www.youtube.com/watch?v=LSP2uD3CD7Y
http://www.world-heritage-site.com/?p=5802 The forerunner of Phong Nha – Ke Bang National Park was the Phong Nha Natural Reserve formed in 1992.