MAP21: Center of the Unknown (Echelon)


Echelon maps 21-30

01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 18 19 20
(21 - 30)

This level occupies the map slot MAP21. For other maps which occupy this slot, see Category:MAP21.
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MAP21: Center of the Unknown is the twenty-first map of Echelon. It was designed by Sverre André Kvernmo (Cranium) and uses the music track "Underground" by Ribbiks. The par time defined in ZMAPINFO is 13:00.


Map of Center of the Unknown
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.


Other points of interest[edit]


  1. Open a bookshelf east of the super shotgun at the start to find a box of shotgun shells, an energy cell pack, and a megaarmor. (sector 41)
  2. In the western hall, look for a recessed wall at the south wall and open it to find a teleporter leading to lots of health bonuses. (sector 200)


Demo files[edit]

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 January 14, 2022.


Player spawns[edit]

This level contains five spawn points:

  1. facing west. (thing 301)
  2. facing east. (thing 303)
  3. facing north. (thing 305)
  4. facing north-west. (thing 306)
  5. facing south-west. (thing 307)


Map data[edit]

Things 327
Vertices 2522*
Linedefs 2995
Sidedefs 4912
Sectors 713
* The vertex count without the effect of node building is 2157.


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

Technical information[edit]

Inspiration and development[edit]


See also[edit]


External links[edit]