Phia Vai Cave

Phia Vai Cave is a limestone cave located in Khuon Ha Commune, Lam Binh District, Tuyen Quang Province in northeastern Vietnam. Situated within the forested karst landscape of the Na Hang - Lam Binh area, the cave is recognized as an important archaeological site containing prehistoric cultural remains. It features natural stalactite formations and excavation areas that have yielded stone tools and evidence of ancient human habitation, attracting visitors interested in archaeology and natural scenery.

Visitors can expect a natural limestone cave set in forested karst hills near Na Hang Lake in Khuon Ha. The cave interior contains stalactites and stalagmites, uneven rocky floors and archaeological excavation areas where prehistoric artifacts have been found. The surroundings are rural and forested with limited development. Access typically involves a walk on natural paths and exploring the cave chamber with a local guide. There are no elaborate tourist facilities inside the cave.

Phia Vai Cave is an archaeological site where excavations have revealed evidence of prehistoric human occupation, including stone tools and cultural layers attributed to the Hoabinhian period dating back thousands of years. The findings contribute to understanding early human settlement in northern Vietnam's karst region.

The cave holds cultural significance as evidence of ancient habitation in the Na Hang - Lam Binh region and is valued locally as part of the natural and archaeological heritage of Tuyen Quang Province.