Starting areaStarting area
Author Dave Sawford
Port Vanilla Doom
Year 1994
Link Doomworld/idgames
This level occupies the map slot E1M1. For other maps which occupy this slot, see Category:E1M1.

Cavlab11 is a single-level PWAD for Doom that was released in 1994. It was designed by Dave Sawford, and is based around the Cavendish Laboratory in Cambridge, United Kingdom.

This level appears on Maximum Doom as CAVLAB12.WAD.


Map of Cavlab11
Letters in italics refer to marked spots on the map. Sector, thing, and linedef numbers in boldface are secrets which count toward the end-of-level tally.


You start this map outside a scientific base. You can open the door, or take a teleporter next to you to enter the base. Be aware that the area is infested with numerous enemies, so proceed with caution. Upon entering, go through the door located on the left side, to the west. Inside there are useful items. Go to the south wall and look for the misaligned texture, inside is a chaingun. Return to the main path and continue south. Climb the marble platform up the stairs and follow the path. Several enemies will be guarding the area. At the bottom you will find a room with a rocket launcher. When you pick it up, it will open a monster closet with several demons inside and also the blue key. Once you pick it up, return to the center of the map. At the exit, three cacodemons will ambush you.

Go back near the entrance and go through the door located on the east wall. Inside is another room with enemies. At the back is the blue door. Once you cross the door it cannot be opened from the inside. The new room has a few imps and cacodemons waiting for you. Once you eliminate them, go to the north wall and open the first door. A baron of Hell will attack you. Inside is the yellow key.

Once you pick up the yellow key, leave the room and go to the next room. Inside is a switch that opens the door to the room at the other end, at the bottom. Inside you will find a few demons. Once you kill them, another switch will open the door to the next room and in that room you will find the switch that opens the final door, which takes you to the center of the map.

Exit and head south, right next to where you came out. The yellow door will be in front of you. This door leads to a one way hallway, in the second section you will be ambushed by several enemies. Go straight ahead and you will find the red key. Once you pick it up, the walls will descend to reveal an outside area, where several imps and cacodemons will attack you. Return to the center of the map once you have eliminated them.

Go west, at the bottom of the wall you will find the way to the exit. Go ahead, open the door and follow the path. You will reach a long hallway where several demons will ambush you from behind. After defeating them, go back to the back on the south side and keep going until you find a door, press the switch and continue. In front of you there will be several rocket packs and an elevator. Be careful when going up the elevator, because if you jump too early or run into the ceiling, the elevator won't go up.

At the end, you will find yourself in a huge final combat arena with a considerable army of demons. Run quickly to the center of the arena and collect the invulnerability sphere. You can quickly run to the door on the other side and activate the exit switch, but, if you want to defeat the enemies, you will have to be accurate and cause infighting. On the other hand, the only thing you need to do to finish the map is to press the exit switch.

Other points of interest[edit]


  1. After going through the first door, go through the door on the right. The southern wall of this room has a secret door (marked with a different texture) leading to a chaingun and (on hard skill only) two imps. (sector 16)
  2. After going through the first door, there is a secret door on the east wall just after the two barrels leading to 4 shotgun shells and a megaarmor. (sector 80)


Demo files[edit]

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Current records[edit]

The records for the map at the Doom Speed Demo Archive are:

Run Time Player Date File Notes
UV speed
NM speed
UV max 6:08.51 Napsalm 2023-04-07
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on April 16, 2023.


Map data[edit]

Things 298
Vertices 531*
Linedefs 613
Sidedefs 910
Sectors 140
* The vertex count without the effect of node building is 477.


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

Technical information[edit]

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