Kjeragbolten – Kjerag boulder is wedged into a mountain crevasse in west Norway along the Lysefjord. Because Preikestolen is so crowded, Kjerag has become a popular hiking and climbing destination. You don’t need equipment to walk out onto the rock,.
Explore the ancient caves of Hang Son Doong, Vietnam. Hang Son Doong is one of the largest caves in the world and features a fast-flowing underground river. For spelunkers, exploring Hang Son Doong is the equivalent of scaling Mount Everest.