Parc national de Phong Nha-Ke Bang, Cave

Phong Nha-Ke Bang National Park (Vietnamese: Vườn quốc gia Phong Nha-Kẻ Bàng), cave and view to outside - Phong Nha - Ke Bang ; in the Bố Trạch and Minh Hóa districts of central Quang Binh Province, in north-central Vietnam