Son Doong Cave: Journey to the underworld
Not for the faint-hearted, a visit to Son Doong Cave
in Phong Nha Ke Bang National Park, Vietnam is like going on a Journey to the Centre of the Earth
. While it’s nowhere near the earth’s core, you’ll find an unspoilt underground world teeming with flora and fauna, as well as prehistoric coral fossils. The largest cave on earth, it takes days to trek, climb, crawl and swim through the jungles, river and lakes inside. What’s even more fascinating is that it has its own weather system – so don’t be surprised if you see clouds inside! Currently Oxalis Adventure Tours offers the only tours to explore the cave from late January to end of August.