Blog listing by destinations Quang Binh
Son Doong - World’s Largest Cave
20 July, 2019 Phuong Thao
The Phong Nha-Ke Bang National Park in Vietnam contains the oldest karst system in Asia, between 400-450 million years old. Hang Son Doong (Son Doong Cave) itself is relatively young, with the analysis of sediment dating it to be only 3 million...
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