In a country famous for its dramatic landscapes, Dimmuborgir stands out. It was formed when a volcanic eruption poured into a lake, causing the molten flow to harden into surreal pillars and craggy chambers. The area merits a visit not only for its geological spectacle but for its cultural importance. Grýla and Leppalúði, evil-doing giants featured in the Icelandic sagas, are thought to shelter here each December.
Visitors will find a network of well-marked walking trails through the Dimmuborgir lava field. The most popular loop, Church Circle, is 1.4 miles (2.3 kilometers) and takes about an hour, while the longest, Dimmyborgir-Hverfjall-Storgja, is 5 miles (8 kilometers). Plan on either coming independently with your own transportation or as part of a guided day or week-long tour. Most excursions combine visits to Dimmuborgir with other nearby natural attractions, such as Lake Mývatn or Dettifoss waterfall in Vatnajökull National Park.