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Tien (Fairy) cave

Detailed map for 404 caves of Phong Nha cave system created

After some 30 years of research, experts from the British Royal Caves Association (BCRA) has created a detailed map for 404 caves that have staggering length of 231km in Phong Nha-Ke Bang National Park in Quang Binh Province in the North Central region, said the park’s director Pham Hong Thai.