Phong Nha cave is most typical of the aesthetic value and the uniqueness in Phong Nha-Ke Bang heritage, the Royal Society was voted as one of the most beautiful caves in the world with 7 criteria: cave has wide and high shelf; There are sandy beaches, beautiful reefs; have the most beautiful subterranean River; have the system magical stalactites and the most magnificent; have the hang to dry high and wide; have a nice, deep underground water; There is water the longest.
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