Pronounced "dim-moo bore-gear", the Dimmuborgir is a large area of unusually shaped lava fields east of Lake Mývatn, on Iceland. The Dimmuborgir area is composed of various caves and rock formations. It would seem that this has been formed from a lava-lake, out of which molten lava flowed and left behind strange formations. The most famous cave being Kirkjan - the Church - high with a large gothic style vault. Dimmu=foggy/dark, Borgir=castle/fortress.