MAP04: River Valley (Lost Civilization)

Lost Civilization maps 01-11
MAP01: Mountain Pass MAP02: Oceanside MAP03: The Farmlands MAP04: River Valley MAP05: Mountain Village MAP06: The Secret City MAP07: Lost in the Forest MAP08: Castle MAP09: Courtyard MAP10: Nightmare MAP11: Nightfall
(01 - 11) 12 13 14 15 16 17 18 19 20 Bonus map: 31

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

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MAP04: River Valley is the fourth map of Lost Civilization. It was designed by Jaakko Impola (Jaska) and uses the music track "A Presence in the Air" by Bjørn Lynne.

Walkthrough

Map of River Valley

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.

Secrets

1. After getting through the first fence, go west towards the crates and behind them you can find a rocket launcher and rockets. (sector 4740)
2. Head south from Secret #1 through another bush to reach the backyard of the red keycard building. Shoot the barrels and head northwest to find the red skull key. (sector 2329)
3. Staying on the same high ground you found at Secret #2, keep going west, then southwest when you can to get to a soul sphere. (sector 1973)
4. Go along the perimeter of the blue keycard area to the northwest side and open the door with the red skull key. Enter the vent near the plasma gun and keep going west to get the yellow keycard. (sector 3608)
5. Go all the way back to the farmland at the east side of the map and go to the northeast side to find a green armor and a stimpack. (sector 1418)
6. Head west of the farmland and into a maze-like area. Keep going west at the first fork, then north at the next, then east. A rock will lower as you approach the dead end, and behind it is a rocket launcher, medikits, a green armor, and rockets. (sector 486)
7. Head back west, south, west, then northwest, climbing onto the rocks there. Go clockwise, around the large orange rock, then southeast to a super shotgun and shotgun shells. (sector 1906)
8. On the same ledge where Secret #7 is, jump to the north and follow the water upstream until you get to a soul sphere. (sector 986)
9. Head south from the previous secret down and towards the rocks between the trees. Climb them and head counter-clockwise around this rock until you get to a plasma gun, a medikit, and an energy cell pack. (sector 1946)
10. At the backside of the large building at the west end of the map, head to the northwest steps. At the top of those steps, jump to the orange rock and keep going north, then jump north again to an area with a soul sphere. (sector 3565)
11. Go through the yellow door at the north side of the large building and on the east side, go north to an orange rock. Jump to another rock to the north, then to two more. On this rock, go through the dark passage and climb the rocks up. At the top, jump to the east, then jump southeast on top of a building with a rocket launcher and rockets. (sector 2058)
12. Go through the yellow door at the north side of the large building and on the east side, go north to an orange rock. Jump to another rock to the north, then to two more. On this rock, go through the dark passage and climb the rocks up. At the top, head south and open the door with the yellow skull key (found at the far northeast end of the river valley). Take the teleporter to get to an area with a megaarmor, a chaingun, ammo clips, energy cells, a BFG9000, and a medikit. (sector 3786)

Speedrunning

Current records

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

Run	Time	Player	Date	File	Notes
UV speed	2:59.09	trashgarbage	2023-11-13	lostciv04-25909.zip
NM speed
UV max	17:10.40	Neil Kloster	2022-05-24	lostciv04m1710.zip
NM 100S
UV -fast
UV -respawn
UV Tyson
UV pacifist

The data was last verified in its entirety on December 4, 2023.

Statistics

Map data

Things	2407
Vertices	26022*
Linedefs	30910
Sidedefs	57493
Sectors	5780

* The vertex count without the effect of node building is 26022.

Things

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

Single-player
Monsters	1-2	3	4-5
Zombieman	104
Shotgun guy	111
Heavy weapon dude	42	48	48
Imp	307	306	306
Demon	65
Spectre	14
Revenant	20	24	25
Cacodemon	17
Pain elemental	1
Hell knight	23	24	24
Baron of Hell	2
Arachnotron	6	6	7
Mancubus	17	18	19
Arch-vile	3	5	5
Cyberdemon	1
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	10
Super shotgun	8
Chaingun	13
Rocket launcher	12
Plasma gun	5
BFG9000	1
Ammunition	1-2	3	4-5
Clip	2
Box of bullets	21
4 shotgun shells	19
Box of shotgun shells	11
Rocket	62
Box of rockets	24
Energy cell	3
Energy cell pack	6
Health & Armor	1-2	3	4-5
Stimpack	6
Medikit	98	98	94
Armor	7	7	8
Megaarmor	4	4	3
Items	1-2	3	4-5
Armor bonus	50
Health bonus	24
Supercharge	7
Berserk	3
Partial invisibility	2
Keys	1-2	3	4-5
Blue keycard	1
Blue skull key	1
Red keycard	1
Red skull key	1
Yellow keycard	2
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Exploding barrel	144
Teleport landing	65
Voodoo doll	7

Cooperative
Monsters	1-2	3	4-5
Zombieman	104
Shotgun guy	111
Heavy weapon dude	42	48	48
Imp	307	306	306
Demon	65
Spectre	14
Revenant	20	24	25
Cacodemon	17
Pain elemental	1
Hell knight	23	24	24
Baron of Hell	2
Arachnotron	6	6	7
Mancubus	17	18	19
Arch-vile	3	5	5
Cyberdemon	1
Weapons	1-2	3	4-5
Chainsaw	1
Shotgun	10
Super shotgun	8
Chaingun	13
Rocket launcher	12
Plasma gun	5
BFG9000	1
Ammunition	1-2	3	4-5
Clip	2
Box of bullets	21
4 shotgun shells	19
Box of shotgun shells	11
Rocket	65
Box of rockets	24
Energy cell	3
Energy cell pack	6
Health & Armor	1-2	3	4-5
Stimpack	6
Medikit	98	98	94
Armor	7	7	8
Megaarmor	4	4	3
Items	1-2	3	4-5
Armor bonus	50
Health bonus	24
Supercharge	7
Berserk	3
Partial invisibility	2
Keys	1-2	3	4-5
Blue keycard	1
Blue skull key	1
Red keycard	1
Red skull key	1
Yellow keycard	2
Yellow skull key	1
Miscellaneous	1-2	3	4-5
Cooperative start	4
Exploding barrel	144
Teleport landing	65
Voodoo doll	7

External links

• Lost Civilization demos at the Doom Speed Demo Archive