MAP03: Avernus (The Abyss)


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The Abyss maps 01-11

(01 - 11)
12 13 14 15 16 17 18 19 20 21 22
Secret maps: 31 32

This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.
The sealed starting room of Avernus.

MAP03: Avernus is the third level of The Abyss. It was designed by Miklos de Rijk (H2SO4), and uses Heretic window textures. It is a marble temple similar to an ancient Roman avernus, or the Ploutonion at Hierapolis. The noxious red liquid surrounding the temple is poisonous water that damages the player.

This level is completely non-linear, and the temple's two keys may be obtained in any order, but most players will collect the blue key first.

"Follow the bloody cross."
― ABYSS.TXT [source]


Map of Avernus
Letters in italics refer to marked spots on the map. Sector numbers in boldface are secrets which count toward the end-of-level tally.


Grab the temple's two skull keys, raise the pillars, and make it to the exit. Each key triggers a trap when collected.

The first key to obtain is the blue skull key, guarded by imps, a Hell knight, and an arachnotron on higher skill levels. There is a special room dedicated to this key that is quite easy to find. The second key is located outside, on a pillar that must be lowered. It is also obtainable when hitting the switch in the blue skull key room.

The last quest is to lower the pillars blocking the exit. The switch to lower them is well hidden, and a cacodemon guards the switch at higher skill levels.

Other points of interest[edit]

  1. The courtyard contains a few powerups in the wall, as well as hidden monsters.
  2. The two sheds outside contain monsters and a backpack in coop.
  3. There are alternate routes to almost every room except the courtyard.


  1. (sector 123)
  2. (sector 129)
  3. (sector 131)
  4. (sector 132)
  5. (sector 134)
  6. (sector 137)
  7. (sector 138)
  8. (sector 158)
  9. (sector 176)
  10. (sector 205)
  11. (sector 234)
  12. (sector 243)
  13. (sector 255)


Areas / screenshots[edit]


Routes and tricks[edit]

Current records[edit]

The records for the map at the Doomed Speed Demos Archive are:

Run Time Player Date File Notes
UV speed
NM speed
UV max
UV -fast
UV -respawn
UV Tyson
UV pacifist

This information was last verified in its entirety on January 15, 2018.


Most action will take place in the key room or the stairs room. On source ports with 3D height checking, it may be possible to "jump over" players and take them by surprise from behind.


Map data[edit]

Things 375
Vertices 1243*
Linedefs 1407
Sidedefs 1917
Sectors 306
* The vertex count without the effect of node building is 1066.


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


  • The courtyard seems to be in an unfinished state, but it is populated in multiplayer.

External links[edit]