Experience the barren interior of Iceland and the lunar-like landscape where NASA trained the Apollo Astronauts. On this Askja Caldera tour you can also catch a glimpse of iconic natural wonders such as Herðubreið Mountain, Herðubreiðarlindir Oasis and Jökulsá á Fjöllum Glacial River. You might also be able to spot trolls, ghosts and other creatures that are said to live in the area and have haunted travelers for centuries.