An amateur’s guide to trekking Phong Nha – Ke Bang

For a month before departing for Phong Nha – Ke Bang National Park, Phuong Uyen cycled 10 kilometers a day to prepare for her first trekking trip.

Source: VNExpress International,
https://e.vnexpress.net/photo/places/an-amateurs-guide-to-trekking-phong-nha-ke-bang-4584362.html