Kverk fjöll

The spectacular Kverkfjöll mountain range, located on the north-eastern boundary of Vatnajökull, reaches 1,920 meters (6,300 feet) at its highest point. A big hot lava chamber beneath the mountain has developed amazing glacier caves, but only enjoy them from the outside as they can collapse at any time and inflict catastrophic harm. There are various hiking trails in the distant Kverkfjöll region, which are only accessible from the north through a 4x4 vehicle and hence rather inaccessible, so once there, you actually feel as if you've discovered uncharted terrain. The surrounding region is one of the most active geothermal zones in Iceland.