Explore Vatnshellir Cave on a guided tour that takes you up to 200 meters into the cave and 35 meters below the surface. You will follow the path of a lava flow in one of Iceland's most easily accessible lava tubes that was formed almost 8000 years ago. On the tour you will get to know the basics of the formation of the cave and the geology of the area. Even though the cave is fairly accessible, you need to be reasonably fit to walk in the cave. Available all year.