Hang Sơn Đoòng được hình thành khoảng 2-5 triệu năm trước, Hang có chiều rộng 150 mét, cao hơn 200 mét,
Last month 8/2013 electric lighting systems and floor coatings directed by dynamic Korean foreign experts design is completed, make voyeuristic guests.
Phong Nha Cave was discovered in 1899 for the first time, and then it is used in many different purposes. According
Ecotourism point Springs Trailer is located about 20 minutes Phong Nha car. After visiting the magnificent caves of Heritage Phong Nha