The cave is 30-100 meters wide, with the widest point measuring 150 meters, according to the British Caving Association, the Governing Body for Underground Exploration in the UK. There are two stalactite pillars, each about five meters high and a rock arch around 100 meters wide. Take a deep breath before you go further to prepare yourself for what is ahead, or you will think you have stepped into a primitive forest that aged into stalactite. Stalactites that look like temples, cranes with their arched necks looking up to the sky and a pine tree with hundreds of branches are dotted throughout this underground world. With a little imagination, there is no end to the shapes to be found in the cave. What’s more, around Thien Duong Cave are dozens of stalactite mounds 30-50 centimeters tall, resembling Buddha statues, some of them with diameters of more than a meter. One stalactite structure looks like the communal house of the Central Highlands people.
Howard Limbert, a member of the British Caving Association, says Thien Duong Cave might be the longest dry cave in Asia.