Paradise Cave
Centraal Vietnam,
Vietnam
Another of the many caves in the Phong Nha Ke Bang National Park, this is Paradise cave. Surrounded by forested karst peaks, this remarkable cave system extends for 31km, though most people only visit the first kilometre, so keep walking.The scale is breath taking, as wooden staircases descend into a cathedral-like space with colossal stalagmites and glimmering stalactites.