Doom Wiki
This level occupies the map slot MAP04. For other maps which occupy this slot, see Category:MAP04.

MAP04: Pit of Sludge is the fourth map of Claustrophobia 1024. It was designed by Stuart Rynn (Forty-Two) (who also wrote the music track "Edge" for this map) and Steve Muller (Kyka).


Map of MAP04

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


  1. When the level begins, at the bottom of the stairs, the wall to the west end of the tunnel is made of thinner rock than the rest of the wall. Push it to uncover a berserk. (sector 122)
  2. Out of the four wooden panels on the central structure, one does not bear any skulls. Shoot it to reveal a switch, and then shoot that switch to reveal a supercharge to the north. (sector 222)