The cave was discovered in the dense forests of Vietnam’s Phong Nha ... Adventure tour agency Oxalis now offers multi-day exploration tours of Hang Son Doong. They take groups of ten into ...

The Southeast Asian gem of Vietnam offers natural wonders ... looking for a unique and remote experience. Oxalis Adventure offers incredible guided tours (both group and private) that take you ...

Hang Son Doong is the world's largest ... a British cave explorer and technical director at Oxalis Adventure, a company that ...