Dimmu Borgir is a 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; vocalist Shagrath and rhythm guitarist Silenoz are the only original members who still remain, with lead guitarist Galder being a longstanding member. Dimmu Borgir was founded in 1993 by Shagrath, Silenoz and Tjodalv; the band released an EP in 1994 entitled Inn i evighetens mørke ("Into Eternal Darkness" in English).