Paradise Cave and Dark cave both are located in Phong Nha - Ke Bang National Park that is full of the limestone mountains. First 5km of Paradise Cave has been discovered by explorers of the British Cave Research Association in 2005. Until 2010, the explorers officially announced that they has fully discovered the whole cave which is 31,4km full length. The widest part of the cave is around 150 meters and the highest point is around 100 meters which makes the cave longest and biggest dry cave in Asia.
The the main while, there are a lots of adventurous activities are waiting for you at the Dark cave: zip-lining, swimming, kayaking on the cool water will wake you up. At the end of the cave, mud bath is the most interesting spot that once you get dipping into it, you will not want to get out of it anymore. Swing, mini-ziplines with obstacle course are waiting for you on Chay river. Swimming in cool blue water is one of remarkable experiences in your life