Puong Cave ( Dong Puong ) in Bac Kan province of Vietnam

Puong Cave ( Dong Puong ) in Bac Kan province of Vietnam

Puong Cave located on the Nang River, 5km from the town of Cho Ra, was created by the river’s current as it flowed next to the base of the Lung Nham Mountains, which are a chain of limestone mountains. The...
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