Mysterious Tien Son Grotto

Tien Son is a famous cave belonging to Phong Nha-Ke Bang, a world natural heritage site in the central province of Quang Binh. Nguyen Duc Trong shares the mysterious beauty of the cave through his photos.

Amazing natural beauty of Phong Nha-Ke Bang

Phong Nha-Ke Bang again proposed for world natural heritage recognition









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