The tour through Son Doong Cave in Phong Nha – Ke Bang National Park in the central province of Quang Binh has been listed among the top adventures in the world by British TV channel Dave.
From an early age, local man Ho Khanh used to spend weeks on end trekking and maneuvering his way through the jungles of the Phong Nha-Ke Bang National Park, searching for food and timber to earn a living.
In 1990, while out on a hunting mission, Ho Khanh stumbled upon an opening in a limestone...
