Explore Tien cave

The twin Hang Tien caves were first visited by the British Cave Research Association in 1994 and explored further in 2015. This part of Vietnam is particularly wild, and it was difficult to find all the openings, so the locals provided invaluable assistance. The caves lie outside of Phong Nha-Ke Bang National Park. The Hang Tien caves are the largest in the Tu Lan cave system, combining the massiveness experienced in caves like Hang En with the fascinating formations associated with this system. Hang Tien 1 has the largest chamber, while Hang Tien 2 is the longest at 3km. The caves are particularly striking for their flora in the entrance passages, made possible by the daylight entering deep into the cave. These cracks also allow drip water into the cave, resulting in numerous stalactites and stalagmites. Stalactites grow from the ceiling and expand by about 1cm every 10 thousand years. The ceiling dome likely formed many years ago when the cave was full of water.

Nguyen Van Hai,   Viet Nam, Dong Hoi city