(VOVWORLD) -Thien Duong (Paradise) Cave in the Phong Nha-Ke Bang National Park, has been named having the most unique and magnificent system of stalactites and stalagmites in Asia. The...
(VOVworld)- Phong Nha Ke Bang national park in Quang Binh province was recognized as a World Natural Heritage Site by UNESCO in 2003 for its significant geological and geomorphic features....