Dimmu Borgir () is a Norwegian symphonic black metal band from Oslo, Norway, formed in 1993. The name is derived from Dimmuborgir, a volcanic formation in Iceland, the name of which means "dark cities" or "dark castles/fortresses" in Icelandic, Faroese and Old Norse. The band has been through numerous lineup changes over the years; guitarist Silenoz and vocalist Shagrath are the only founding members remaining.Bradley Torreano: [http://www.allmusic.com/artist/dimmu-borgir-p207278 Dimmu Borgir]. AllMusic. Retrieved on 2011-06-11.