MAP03: Mountain of Sacrifice (Harmony)


Harmony maps

This level occupies the map slot MAP03. For other maps which occupy this slot, see Category:MAP03.

MAP03: Mountain of Sacrifice (or Operation Rescue in the original release) is the third level of Harmony. It was designed by Thomas van der Velden (t.v.) and uses the music track "Untitled" by Kyū. The par time defined in MAPINFO is 5:45.


Map of Mountain of Sacrifice
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.


The follower is facing away from you. Attack it will cause up to two more to drop down.

You will also be introduced to floor mines. Shoot them, and they will explode. They will not react to enemies, only you. Proceed through the tunnel, to reach a small canyon. Jump down, head to the right, fight the enemies, and flip the switch to open the bars blocking the north. Proceed past these open bars, and fight the two Hunters and Phage. Collect the green key.

Return to the canyon, and approach the north wall. Open the green key door, and enter. Defeat the creatures and flip the switch on the far end of the room, opening an alcove to the west. You may now get the minigun from the lift. Proceed north east, and into the room to the north. Take the north east exit, and follow the corridor to reach the yellow key. If you decide to go through the wall on the east, you will go through an arena, where you fight a gauntlet of Phages and other enemies.

With the yellow key, head west from the chapel room. After jumping down, open the door on the right to head outside to the west. Stand on the floor switch to lower the bridge, and head to the second canyon. This leads to a small prison; flip the switch on the south to unlock the western portion of the map.

Head to the south-west part of the map. First is the main control room, which overlooks a sub. Exit, and head to the alternate control room to the west, and flip the switch to lower the purple key. Use this key to unlock the south-east door in the canyon.

Once you are past the final locked door, you should come across a small arena of Phages. step on the center floor button and head north. The exit is the ladder into the floor.


  1. After getting the green key and going through the door, there is an alcove on the right that opens if you flip the switch at the end of the room. Look for a hidden door, which leads you to a platform where you killed some enemies earlier. (sector 73)
  2. In the northern part of the map, you should see some sells. In one of them, there is a small candle in a wall alcove with a floor marking. Use this to open the north wall, revealing a grenade launcher and armor. (sector 522)
  3. At the western part of the map, you should be in a control room with a pillar in the north-east corner. Use a hidden switch found in the southern window on the right-hand wall to lower the pillar, revealing super armor. (sector 145)


In version 1.1, a phage (thing 363) is partially stuck inside a rock and cannot move. This was fixed for the Doom Classic Unity port.

Areas / screenshots[edit]


Routes and tricks[edit]

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
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The (absence of) data was last verified in its entirety on December 12, 2021.


Player spawns[edit]

This level contains four spawn points:

  1. facing east. (thing 393)
  2. facing east. (thing 395)
  3. facing east. (thing 397)
  4. facing south-west. (thing 399)


Map data[edit]

Things 432
Vertices 5287*
Linedefs 5547
Sidedefs 9053
Sectors 703
* The vertex count without the effect of node building is 4502.


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

External links[edit]