Dark Cave – a miniature version of Son Doong Cave

(Quang Binh Portal) – The Phong Nha – Ke Bang Tourism Centre has officially introduced a tour to conquer Toi (Dark) Cave in the world’s natural heritage site Phong Nha – Ke Bang National Park as part of the Quang Binh Cave Festival 2015. According to Director of the Phong Nha – Ke Bang Tourism […]

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