Dimmuborgir (immu "dark", borgir "cities" (or "forts"); pronounced [tɪmʏpɔrcɪr]) is a large area of unusually shaped lava fields east of Mývatn in Iceland. The Dimmuborgir area is composed of various caves and rock formations, remnants of volcanic activity that are perhaps reminiscent of an ancient collapsed citadel, with columns spewing plumes of sulfuric smoke. In Icelandic folklore the Dimmuborgir is said to connect earth with the infernal regions, and is the purported dwelling-place of elves, trolls, and Santa Claus/Father Christmas.