Barathrum is a Finnish black-doom metal band, formed in 1990. The band's name is Latin for pit or abyss. The first letters of their eight full-length albums spell "HEIL SOVA" - referring to the band's frontman, Demonos Sova, who is the only original member of the band. Their music is stylistically similar to early black metal acts such as Venom and Celtic Frost. Their lyrics deal with occult and religious themes.