Khuoi Pin Cave.

Khuoi Pin Cave is about 1.5km of the water surface of Tuyen Quang hydroelectric lake. The cave is about 500m long, 300m wide and over 100m high. In the cave, there are many underground water flows, forming fresh water pools.

The cave has 3 compartments shaped like a turtle shell, with hundreds of small nooks and crannies. If the highlight of compartment 1 and compartment 2 are stone statues of nature, compartment 3 is marked by the wide dome like a covered stadium.

Stalactites rising from the ground and descending from the arch of the cave create a multitude of fancy shapes that make visitors curious and interested.

The discovery of Khuoi Pin Cave, along with national monuments and landscapes will be an attractive tour for tourists to explore Tuyen Quang land.