E3M5: The Ophidian Lair (Heretic)

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Heretic maps
City of the Damned

M1 M2 M3 M4 M5 M6 M7 M8 M9

Hell's Maw

M1 M2 M3 M4 M5 M6 M7 M8 M9

The Ossuary

M1 M2 M3 M4 M5 M6 M7 M8 M9

The Stagnant Demesne

M1 M2 M3 M4 M5 M6 M7 M8 M9

Fate's Path (deathmatch only levels)

M1 M2 M3

This level occupies the map slot E3M5. For other maps which occupy this slot, see Category:E3M5.

E3M5: The Ophidian Lair is the fifth level in The Dome of D'Sparil episode of Heretic. It shares its music track with E1M3: The Gatehouse and E4M3: Ambulatory.


Map of The Ophidian Lair
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. While searching for the yellow key, you will come to a hallway with eight fire braziers. The two westernmost pillars have switches which can be seen in a screenshot below. Press the southern one to open a door on the southern wall of the hallway. Beyond the door, there is the Hellstaff and a varying amount of ammunition for it. (sector 101)
  2. Press the northern switch to open a door on the northern wall. Enter the new area to find a Torch along with some health and ammunition items. (sector 114)
  3. Collect the yellow key, and three doors will open around you. Every time you cross their doorways, the glass painting on the opposite side of the hallway will open temporarily. Behind, there is a teleporter leading to the barred area northeast of the center room. While the place holds a plethora of valuable items such as an Enchanted Shield, a Ring of Invincibility, a Tome of Power, the Phoenix Rod and ammunition items, there are a lot of strong enemies as well. The first non-boss maulotaur guards the area on smite-meister or higher. Use the teleporter on which you landed to escape. (sector 73)
  4. As you have gone past the unavailable green key and opened the wooden door, you will come to a long passage. There are five wooden beams under which there are alcoves with banners. When you are at the middle one, face west to notice that the alcove is deeper and has a different banner. Move towards the banner to make its wall rocket open. The stairs behind the wall lead to a room with many timebombs and health and ammunition items. The teleporter at the end will take you to a small chamber with a Shadowsphere. The rootless wall in front is a one-way door to the center room. (sector 84)

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
SM speed 0:49.77 Kokrovan 2021-07-30 heretice3m5-4977.zip
SM max 07:30 Bruno Vergílio 2006-10-07 h3m5-730.zip
BP speed 0:50.54 Kokrovan 2021-07-30 heretice3m5b-5054.zip
BP max 07:08 Bruno Vergílio 2007-01-11 h3f5-708.zip
NM speed 02:01 Anonymous 1996-10-29 htic-nm.zip
NM 100S 1:21.17 Jean-Charles Dorne (JCD) 2021-03-01 h3x5-121.zip
Pacifist 0:55.31 Aleksey Kamenev (4shockblast) 2021-09-21 h3p5-055.zip
NoMo 0:42.77 Batawi 2021-11-15 h3o5_4277.zip

The data was last verified in its entirety on November 29, 2021.


Player spawns[edit]

This level contains four spawn points:

  1. facing south-west. (thing 44)
  2. facing south-east. (thing 45)
  3. facing east. (thing 46)
  4. facing north. (thing 47)


Map data[edit]

Things 541
Vertices 768*
Linedefs 916
Sidedefs 1187
Sectors 183
* The vertex count without the effect of node building is 705.


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

External links[edit]