E3M6: Mt. Erebus is the sixth map of Inferno in Doom. It features a secret exit to E3M9: Warrens. It is apparently named after a region of the Underworld in Greek mythology. There is also a real Mt. Erebus, Earth's southernmost volcano, in Antarctica, named after the exploration vessel HMS Erebus, which was in turn named after the mythological Erebus. It uses the music track "On the Hunt" and has a par time of 1:30.