Thien Duong Cave in Phong Nha-Ke Bang National Park in the central province of Quang Binh, which is regarded as the worldÃÔ longest cave, is becoming a fascinating attraction for local and foreign tourists alike.

Discovered in 2005 and only opened to tourists last year, the cave is reported to be more attractive than Phong Nha or Tien Son caves.

According to the British Cave Research Association, Thien Duong Cave lies on a complex area of limestone mountains at a height of 191 meters and is surrounded by the primeval forest of the Phong Nha-Ke Bang National Park.

The cave is striking with its length of 31.4 kilometers and splendid geological tectonics which are large and diverse. Stalactites in the cave are very beautiful and the maximum height of the cave is 100 meters.