Puong Cave formed by the Nang River that flows under the limestone among the vertical cliffs of Lung Nham Limestone Mountain is where tourists should visit to trace vestiges of time and riddles of nature. The cave is over 30 meters high and 300 meters long.
Located in Ba Be National Park, about five kilometers from the town of Ba Be District, Bac Kan Province, the cave is attractive thanks to its primitive surroundings. The cave is the residence of many nocturnal creatures and there are 18 species of bats numbering in the thousands living there.
Entering into the cave, tourists will certainly be amazed by ethereal lights, colorful stalactites and giant rocks in strange shapes. Tourists can take a boat cruise to visit the cave.