Lower Underrail

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Lower UnderrailUncontrolled zone
Lower metro system of South Underrail. It used to connect mostly industrial facilities.
Global Map LU.png
Major location information
Music Searchlight Journey
Located in Underrail
Areas Lower Underrail
Connections Under-passages
Upper Caves
GMS warehouse block
Warehouse Block Alpha
Abandoned Warehouse
Warehouse Block Beta
Hecate Research Outpost

Stations:
South Gate Station
Rail Crossing
South Railroad Outpost
Foundry
Core City

Fast Travel Lower metro (South Gate Station)
Lower metro (Rail Crossing)
Lower metro (Foundry)
Lower metro (Core City)
NPCs Blaine, Jack Quicksilver
Technical
Map file(s) lu-a1, lu-a2, lu-a3, lu-a4, lu-a5, lu-a6, lu-a7, lu-a8, lu-a9, lu-a10


lu-b1, lu-b2, lu-b3, lu-b4, lu-b5, lu-b6, lu-b7, lu-b8, lu-b9, lu-b10, lu-b11, lu-b12, lu-b13, lu-b27, lu-b28, lu-b29, lu-b30
lu-b14, lu-b15, lu-b16, lu-b17, lu-b18, lu-b19, lu-b20, lu-b21, lu-b22, lu-b22x, lu-b23, lu-b24, lu-b25, lu-b26, lu-b26x
lu-c1, lu-c2, lu-c3, lu-c4, lu-c5, lu-c6, lu-c7, lu-c8, lu-c9
lu-b10u1, lu-b10u2, lu-b22u, lu-b27u

Lower Underrail is a huge derelict urban area consisting of over 60 zones between major locations. Above it is Upper Underrail, below it are Lower Caves and further down are the Deep Caverns.

Some caves are higher up and directly connected to Lower Underrail, these are known as Upper Caves.

Also immediately below Lower Underrail are under-passages, a network of smaller service tunnels and escape routes.

Description

The Lower Underrail was the industrial/military zone of the underground metro before the dissolution of Biocorp. It consists of sprawling main tunnels, metro tunnels and beneath them are smaller escape routes and other accessways. Various stations, towns, other settlements, abandoned complexes and industrial facilities reside in the Lower Underrail. Some wall breaches also lead to adjoining Upper Caves.

Lower Underrail is accessible from South Gate Station level 1 exit. Most of the explorable areas are to the north from SGS, but there are a couple of areas to the south, including a wall breach leading to upper caves. However, most of Lower Underrail is initially inaccessible due to cave-ins caused by the recent earthquake. They can be visited later on, once the south metro tunnel is cleared and the player has access to TNT Charges.

Enemies

Rathounds are a common sight and various, usually hostile, human outcasts have small camps all over the Lower Underrail.

Critters
Rathounds, Rathound Alphas, Dogs, Burrower Spawn, Pigs, Warthogs
Ironheads
Ironhead Grenadiers (lvl10), Ironhead Gunners (lvl10), Ironhead Smashers (lvl10), Ironhead Psionics (lvl15)
Lunatics
Lunatic Brawlers (lvl10), Lunatic Chillers (lvl10), Lunatic Gunners (lvl10), Lunatic Pyromaniacs (lvl15)
Lurkers
Lurker Cut-Throats (lvl10), Lurker Gunners (lvl10), Lurker Gunslingers (lvl15), Lurker Hunters (lvl15), Lurker Murderers (lvl15)
Other humans
Bandits (during Jack's delivery job quest), Free Drones bandits (during lost train quest)

Quests

Map Gallery

Areas Near South Gate Station (Zone A)

Areas 5, 6, 7 and 8 east of South Gate Station are initially inaccessible, but can be explored once the player can clear the rocks blocking the way with TNT Charges.

Lower Underrail A1

Lower Underrail A4

Lower Underrail A6

Lower Underrail A7

  • The north exit leads to area Lower Underrail A6
  • The southwest exit leads down to Upper Caves area Upper Caves A12
  • The lower box in SW area contains a Protectorate Propaganda oddity, 1 XP
  • The upper box in SW area requires 60 Hacking
  • The SE corner is habited by some Lurkers

Areas Near Rail Crossing (Zone B)

This part of Lower Underrail is near Rail Crossing, to the northwest from South Gate Station. It becomes accessible once the player has access to metro travel and TNT Charges.

Lower Underrail B6

Lower Underrail B7

Lower Underrail B8

  • Has several Dogs
  • Has a box in the NW corner requiring 60 Hacking

Lower Underrail B9

Lower Underrail B10

  • The north exits leads to area Rail Crossing, area Junction
  • The southwest exit leads to area Lower Underrail B10u1
  • The southeast exit leads to area Lower Underrail B9
  • The west exit (stairs down) leads to Lower Passages, area Underpassages A6

Lower Underrail B10u1

Lower Underrail B10u2

  • The north exit leads to area Lower Underrail B10u1
  • The south exit leads to area Lower Underrail B28
  • The ladder leads to a second, dark part of the tunnels
    • It has several Crawlers and Death Stalkers hiding in the shadows
    • The destructible rocks lead to the northern part, but it's also possible to walk around it
    • The room with the skeleton in the center:
    • The natural cave to the north:

Black Crawler's nest

Lower Underrail B12

Lower Underrail B13

Lower Underrail B27

  • The north exit leads to area Lower Underrail B28
  • The south exit leads to area Lower Underrail B27u
  • The western exit becomes available with the Lost train quest from Captain Herve in Rail Crossing. It leads to area Lower Underrail B29

Lower Underrail B27u

Lower Underrail B28

  • The north exit leads to area Lower Underrail B10u2
  • The south exit leads to area Lower Underrail B27
  • The eastexit leads to area Lower Underrail B8
  • The fenced area to the south can be opened with 55 Lockpicking

Lower Underrail B29


Lower Underrail B30

Lower Underrail B33

  • This area is empty, it simply links area B30, B32 and B34

Lower Underrail B34

  • The north exit leads to area Lower Underrail B35
  • The south exit leads to area Lower Underrail B33
  • The east exit leads to area Lower Underrail B6
  • The left passage is inhabited by stealthy Lurker Cut-Throat and Lurker Assassin
  • The cabinet in the left passage contains an Old Train Schedule oddity, 1 XP

Lower Underrail B35

Lower Underrail B35

  • The south exit leads to area Lower Underrail B35

  • Lower Underrail B1

  • Lower Underrail B2

  • Lower Underrail B3

  • Lower Underrail B4

  • Dude's warehouse

  • Lower Underrail B5

  • Lower Underrail B6

  • Lower Underrail B7

  • Lower Underrail B8, connects to Under-passages

  • Lower Underrail B9

  • Lower Underrail B10, connects to Under-passages (hidden footlocker at the south end)

  • Lower Underrail B10U1, dark metro tunnels between Rail Crossing and SRO

  • Lower Underrail B10U2, dark metro tunnels between Rail Crossing and SRO

  • Lower Underrail B10U2

  • Lower Underrail B10U2, black crawler nest

  • Lower Underrail B11, connects to Rail Crossing

  • Lower Underrail B12, Rail Crossing station

  • Lower Underrail B13, connects to Abandoned Warehouse

  • Lower Underrail B27

  • Lower Underrail B27U, dark metro tunnels near SRO

  • Lower Underrail B28

  • Secluded Station (Lower Underrail B29)

  • Lower Underrail B30, outside South Railroad Outpost

  • Lower Underrail B32, dark metro tunnels near SRO

  • Lower Underrail B33, dark metro tunnels near SRO

  • Lower Underrail B34

  • Lower Underrail B35

  • Lower Underrail B36

  • Lower Underrail B37

Areas Near Foundry (Zone B)

This part of Lower Underrail is near Foundry, to the north from South Gate Station and Rail Crossing. It becomes accessible once the player has access to metro travel and TNT Charges.

Lower Underrail B19

  • The north exit leads to area Lower Underrail B23
  • The south exit leads to Warehouse Block Beta, area NW Warehouse Block Beta
  • Is inhabited by some Ironheads
  • The locker near the cauldron requires 60 Lockpicking
  • There is a Frag Mine and a Bear Trap on the east path

Lower Underrail B20

Lower Underrail B22

  • The north exit leads to area Lower Underrail B22x
  • The west exit leads to areaVerify
  • The east exit leads to area Lower Underrail B23

Lower Underrail B22x

Lower Underrail B23

  • The north exit leads to area Lower Underrail C2
  • The west exit leads to area Lower Underrail B22
  • The south exit leads to area Lower Underrail B19
  • The east exit leads to area Lower Underrail B24

Lower Underrail B24

  • The north exit leads to the Foundry, area Central Foundry
  • The west exit leads to area Lower Underrail B23
  • The east exit leads to area Lower Underrail B25
  • Leonie is a metal component merchant
  • The desk near Leonie contains a Foundry Plans oddity, 1 XP
  • The footlocker near Leonie contains a Skeleton Visor oddity, 2 XP

Lower Underrail B25

  • The north exit leads to areaVerify
  • The west exit leads to area Lower Underrail B24
  • The east exit leads to area Lower Underrail B26

Lower Underrail B26

  • The north exit leads to area Lower Underrail B26x
  • The west exit leads to area Lower Underrail B25
  • The south exit leads to area Lower Underrail B42
  • There is an Ironhead Berserker and an Ironhead Heavy Gunner over the corpse of dead man

Lower Underrail B26x

Lower Underrail B41

  • The east exit leads to area Lower Underrail B42
  • The south exit leads to area Lower Underrail B20

Lower Underrail B42


  • Lower Underrail B14 ("How to tame a rathound" book)

  • Lower Underrail B15, Ironhead railway camp

  • Lower Underrail B16, connects to Warehouse Block Beta

  • Lower Underrail B17

  • Lower Underrail B18

  • Lower Underrail B19, Ironhead checkpoint, connects to Warehouse Block Beta

  • Lower Underrail B20, connects to Upper Caves, Warehouse Block Beta

  • Lower Underrail B21, connects to Upper Caves

  • Lower Underrail B22, West-east tracks

  • Lower Underrail B22X, Faceless group

  • Lower Underrail B22U, dark metro tunnels between Foundry and Core City

  • Lower Underrail B23, West-east tracks

  • Lower Underrail B24, Foundry railyard

  • Lower Underrail B25, West-east tracks

  • Lower Underrail B26, East of Foundry

  • Lower Underrail B26X, Bandit cave (Hugo)

  • Lower Underrail B38

  • Lower Underrail B39

  • Lower Underrail B40

  • Lower Underrail B41

  • Lower Underrail B42

Areas North of Foundry (Zone C)

This part of Lower Underrail is located north of Foundry and east of Core City.

Lower Underrail C1

  • The north exit leads to area Lower Underrail C4
  • The westexit leads to areaVerify
  • The south exit leads to areaVerify
  • The east area iss inhabited by a few Lunatics
  • The footlocker near the lunatics contains a Bubblegum oddity, 1 XP

Lower Underrail C1B

  • The south exit leads to area Lower Underrail C5
  • Is inhabited by many Faceless

Lower Underrail C2

  • The northeast exit leads to area Lower Underrail C7
  • The northwest exit leads to area Lower Underrail C11
  • The south exit leads to area Lower Underrail B23
  • Is inhabited by a few Lunatics
  • The footlocker by the lunatics contains an Old World Booze Bottle oddity, 2 XP
  • The barrel by the lunatics contains a Bubblegum oddity, 1 XP

Lower Underrail C4

  • The east exit leads to area Lower Underrail C11
  • The north exit leads to area Lower Underrail C5
  • The southwest exit leads to area Lower Underrail C1
  • The south exit near the metro rail leads to areaVerify
  • Is inhabited by a few Rathound and Rathound Alpha
  • The barrel in the northeast contains a Fancy Lighter oddity, 2 XP
  • The barrel in the southwest contains a Train Log oddity, 1 XP

Lower Underrail C5

  • The west exit leads to Core City Lower Level, area Core City Gates
  • The north exit leads to area Lower Underrail C1B
  • The east exit leads to area Lower Underrail C6
  • The south exit leads to area Lower Underrail C4
  • The barrel near the Praetorians contains a Biocorp Technology Catalog Fragment oddity, 1 XP

Lower Underrail C6

  • The west exit leads to area Lower Underrail C5
  • The east exit leads to area Lower Underrail C7
  • The junk pile contains an Old World Booze Bottle oddity, 2 XP

Lower Underrail C7

  • The west exit leads to area Lower Underrail C6
  • The east exit leads to area Lower Underrail C10
  • The south exit leads to area Lower Underrail C2
  • The south area:

Lower Underrail C8

  • The west exit leads to area Lower Underrail C10
  • The north exit leads to area Lower Underrail C9
  • The south exit leads to areaVerify
  • Is inhabited by Rathounds and Rathound Alpha

Lower Underrail C9

Lower Underrail C10

  • The west exit leads to area Lower Underrail C7
  • The east exit leads to area Lower Underrail C8
  • Is inhabited by several Lurkers (Lurker Hunter, Lurker Gunslinger, Lurker Psionic, Lurker Trapper)
  • Is trapped with 7 Bear Traps. They can be recovered with 100 Traps skill
  • The box contains a Fancy Lighter oddity, 2 XP

Lower Underrail C11

  • The south exit leads to area Lower Underrail C2
  • The west exit leads to area Lower Underrail C4
  • Is trapped with 3 Burrower Poison Bear Traps and 1 Bear Trap. You need 100 Traps to recover all all them.

  • Lower Underrail C1, connects to RAF 013

  • Lower Underrail C2

  • Lower Underrail C3, medical room

  • Lower Underrail C4

  • Lower Underrail C5, Core City outskirts (hidden footlocker at the northeast corner)

  • Lower Underrail C6

  • Lower Underrail C7

  • Lower Underrail C8

  • Lower Underrail C9, connects to Upper Caves and Hecate Research Outpost

  • Core City outskirts, tunnels leading to north Underrail

  • Lower Underrail C10

  • Lower Underrail C11

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Named locales of Underrail. See also Global Map and Zones.
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