Puong Cave

Puong Cave is a large river cave on the Nang River inside Ba Be National Park in Ba Be District, Thai Nguyen Province, northern Vietnam. Formed by river erosion through limestone karst, the cave is about 300 meters long and up to 30 meters high. Notable for its stalactites, stalagmites and colony of thousands of bats, it is accessed by boat and is a key attraction within the national park's lake-river landscape.

Visitors reach Puong Cave by boat along the Nang River, entering a wide, tunnel-like limestone cave through which the river flows. Inside, the cave is about 300 meters long and up to 30 meters high, with stalactites and stalagmites along the walls and ceiling. The interior is dim and cool, home to thousands of bats. Visitors can walk a short distance inside, view rock formations, and observe the river passage and forested karst surroundings.

Natural karst cave formed over millions of years by erosion of limestone by the Nang River; long known as a shelter and navigation landmark for local communities within the Ba Be karst area

Located in the Tay ethnic minority area of Ba Be National Park; associated with local folklore and traditional river-based livelihoods and part of the cultural landscape of Ba Be National Park