E3M6: Mt. Erebus (Doom)

E3M6: Mt. Erebus is the sixth map of Inferno in Doom. It features a secret exit to E3M9: Warrens. It is apparently named after Earth's southernmost volcano, in Antarctica. It uses the music track "On the Hunt". The par time is 1:30.

Secrets
Secret exit: The area that contains the secret exit switch is inescapable, so only enter it once you are ready to exit the level. Pick up one of the invulnerability spheres and make your way back through the teleporter from secret 2. This time, inch along the platform you arrive on to your right and around a corner. You'll see a blue box in the water below. Position yourself directly across from this box and face the red brick wall. Fire your rocket launcher at the wall and run backwards simultaneously, and you should be fired into the box, the invulnerability powerup absorbing all damage you would have taken. This takes you to the secret level. E3M9: Warrens. It's possible to straferun into the box, but the rocket jump is the intended (and easiest) method.
 * 1) Go inside the brown vine-covered building. Inside are two teleporters. Take the one on the right, and you'll be taken to a ledge with a plasma gun on it.
 * 2) Enter the green marble building. There are two candles on the floor against opposite walls here. Open the wall behind the candle on the right for a energy cell pack.
 * 3) From secret 2, open the wall behind the other candle and take the teleport. Once you're through, drop onto the platform ahead of you to get the chainsaw. Note that you must get this secret before collecting the blue key, or the chainsaw platform will raise up out of reach and completing the map with 100% secrets will become impossible.

There is a glitch where you can actually access the Warrens level without accomplishing the above. To do so, go to the area where you would normally try to get into the hole. On the outer regions and where the actual switch is (you won't see it as a blue wall is blocking it), press spacebar at the right spot. Though this is technically illogical, the game will think you've pressed the switch. However, you won't be credited for the secret once you finish the level. You won't be credited for that secret if you exit directly to the next normal level (unless no-clipping mode was activated)

Bugs
Five "floating skull rock" obstacles (Things 209, 214, 220, 221 and 223) and a "burnt tree" obstacle (Thing 229) have no flags set for any of the difficulty classes, so they do not actually appear in the level.

Records
The Compet-N records for the map are:

Trivia

 * According to John Romero, "The only way you are supposed to reach the secret switch [inside the blue box at the north end of the map] was by (1) getting the invincibility, (2) blasting a rocket into the wall so you would fly backwards into the box. We found out early on that it was possible to flip the switch from outside, so Sandy made the walls thicker." (See Doom Level History.) In fact, it is still possible to activate the switch from just outside of the walls, and also to straferun-jump into the box. See Access the secret exit on level E3M6 for details. Also, in the SNES port the player can just simply jump inside the box with the secret exit switch, as it is not possible to be pushed back from a rocket explosion.


 * The mythological place Erebus is originally a deep place of utter darkness and the personification of shadow, but the level takes place in a bright lava-filled open area. This seems to be a reference to Mount Erebus, the volcano in Antarctica. The volcano is incidentally located where one of H. P. Lovecraft's most celebrated tales, At the Mountains of Madness, takes place. In the tale the volcano is described and associated with Edgar Allan Poe's Mount Yaanek (in his poem Ulalume), taking a special and ominous significance. It is noteworthy that the author of the level, Sandy Petersen, had been the writer of a role-playing game based of Lovecraft's mythos, and was later instrumental in introducing many Lovecraft-inspired elements in Quake, the game id Software released after the Doom games.


 * The Doom 3: Resurrection of Evil single player campaign starts at Site 1 (Main Excavation) beneath an installation named Erebus and has five of twelve maps feature Erebus in the map title: Erebus Dig Site, Erebus Labs, Erebus Control, Erebus Research and Erebus Station.

Things
This level contains the following numbers of things per skill level: