It was detected in 2005 and opened for tourists by Truong Thinh Group last September.



The cave is around 60 kilometers from Dong Hoi city. It is located in Phong Nha-Ke Bang
national park. Experts said that Thien Duong is more beautiful than Phong Nha,
which is called the number-one cave in Vietnam.



The cave was discovered by a local man named Ho Khanh.



British explorers then explored the cave and stated that it is 31.4km long,
with width from 30-150m and the height of around 60m.



A famous British explorer, Dr. Howard Limbert, said that Thien Duong may be the longest dry cave in Asia.



The cave is marvelous.



At present, over 500m of the cave is opened for tourists.