The Underworld is the second and final studio album by the American thrash metal band Evildead, released in June 1991 on Steamhammer Records. While the album was a mild success, it did not maintain the same popularity as Annihilation of Civilization, likely due to its release coinciding with the advent of the grunge era, which ultimately resulted in a dramatic decline in the popularity of heavy metal in general. This would be their final album with founding vocalist Phil Flores (who left in 1993) and their only featuring guitarist Dan Flores (though he would stay in Evildead until their breakup and played on their 1994 demo EP Terror), bassist Karlos Medina (who also left in 1993) and drummer Doug Clawson (who left not long after the album was released).

All tracks by Evildead, except "He's a Woman/She's a Man" by Rudolf Schenker, Klaus Meine, Herman Rarebell

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