Gifts of nature for Vietnam and Laos
The national parks of the two countries feature a system of more than 220km of caves and underground rivers, such as Son Doong in Vietnam and Xe Bang Fai in Laos. It is evidence…
Mai Khuyen
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The national parks of the two countries feature a system of more than 220km of caves and underground rivers, such as Son Doong in Vietnam and Xe Bang Fai in Laos. It is evidence…