Subterranean

"Subterranean"
Information
Connections (Karma requirements)	Drainage System  Farm Arrays  Shoreline  Pipeyard  Outer Expanse  (Once unlocked)  Rubicon
Code Name	SB (Subterranean)
Subregions	Depths Filtration System
Rooms (Screens)	56 (209) (Pre-Downpour) 78 (231) (Downpour)
Shelters	7
Details (Spoilers) Colored Pearls Dark Fuchsia Pearl Teal Pearl Scavenger Tolls/Stashes 1 Scavenger Merchant Echo Two Sprouts, Twelve Brackets

Subterranean is a late-game region and consists mostly of long dim tunnels filled with dilapidated trains. This is the final region visited when following the intended path as any Slugcat. The dark pipes of Filtration System connect Subterranean to lower Drainage System and to the caves of the Depths .

Overview

Subterranean spans both sides of the world, connecting to Farm Arrays in the west and Shoreline in the far east. The western side of the region features a steep fissure and a pit overhang, neither of which can be scaled once the player has dropped down. Subterranean is home to a large number of Centipedes, as well as Miros Birds that patrol the center of the map. Filtration System also contains a high number of Black Lizards, which can easily corner and catch the player in dark and narrow crawlspaces. A subterranean lake in the east of the region contains a unique Albino Leviathan, as well as an albino Jetfish when playing as Hunter. Players with fully upgraded Karma can pass through the Depths .

Creatures

Subterranean	Creatures
All	Centipede (Adult)   Centipede (Overgrown)   Black Lizard   Centipede (Infant)   Scavenger   Monster Kelp   Miros Bird   Big Spider   Salamander   Blue Lizard   Batfly   Green Lizard   Leviathan
	Lineage	White Lizard   Red Lizard
Monk
	Lineage	Spitter Spider   Red Centipede
Survivor	Dropwig
	Lineage	Spitter Spider   Red Centipede
Hunter	Dropwig   Spitter Spider   Cyan Lizard   Jetfish   Red Centipede   Eggbug
	Objects
All	Blue Fruit   Mushroom   Cherrybomb   Bubble Fruit   Flashbang   Pearl   Popcorn Plant   Karma Flower*

* Karma Flowers do not appear as Hunter

Points of Interest

• Scavenger Storeroom
• Subterranean Lake
• Dark Fuchsia Pearl, halfway down the left side of the fissure. This can be reached with a long jump or dislodged with Explosives.
• Teal Pearl
• Two Sprouts, Twelve Brackets, on the right side of the fissure.

Gallery

• 

  SB_E04

Subregions

Filtration System

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Filtration System is a dark and dimly lit maze of pipes and shafts connected to Subterranean through four unique tunnels. The lack of illumination makes exploration challenging without a Light source. The subregion is also inhabited by a large number of Black Lizards, which can easily hunt and corner Slugcat in narrow crawlspaces. Filtration System can also be accessed directly via Drainage System and serves as the only entrance to the Depths.

Depths

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SPOILER WARNING: Ending
This section contains major plot details from the end of the game. If you have not yet completed the game on any difficulty, then read no further!

The deepest area in the game, and critical to the plot, the Depths can be accessed through a shaft at the deepest point in Filtration System. There is no threat of Rain, and no natural predators, although the player can be killed if attempting to repeatedly pass the Guardians to the west of the temple compound without the requisite 10th Karma level. There is no simple way to climb back up the entrance shaft.
The upper area in the Depths contains a series of temple and shrine-like structures. In order to progress beyond this compound, the player must have unlocked the 10th Karma level, typically acquired by visiting Five Pebbles or visiting four Echoes. A small room near the entrance of the Depths raises Slugcat's Karma to the current max level. Attempting to make one's way past the Guardians without a maximum karma of 10 first results in Slugcat being thrown back to the start of the room, and then being flung heavily against the ground after a couple of attempts, resulting in death. Guardians have extremely high health pools and so cannot be killed conventionally.

As the player progresses downwards, the compound gives way to a loose cave system which eventually opens out into a lake of golden dark liquid, known as the Void Sea. Slugcat cannot drown in this liquid, and swimming down into this lake begins the ending sequence.

Trivia

• There are multiple unintended ways to bypass the Guardians. With good timing it is possible to blind them with two flashbang fruits for long enough to run past. This was specifically patched out for Hunter in version 1.5.
• The Guardians can also be bypassed by distracting them with a living creature. This works best with small living creatures such as Hazers or Vulture Grubs that can be swallowed and regurgitated repeatedly, aggravating the Guardians more quickly.
• The exit can also be reached by manipulating the Guardians to throw the Slugcat straight upwards, then throwing objects to reach the pipe.
• It is also possible to fully despawn the Guardians by interrupting their room loading time. This is considered the simplest and fastest method of the Guardian despawn and is used for any% speedruns.

Spoilers end here.

Arena mode unlockables

- Hunter exclusive
- Gourmand exclusive
- Artificer exclusive
- Spearmaster exclusive
- Saint exclusive

- Downpour exclusive

Location	Unlockables
Subterranean	Creatures	Black Lizard  •  Centipede (Overgrown)  •  Monster Kelp -  •  Red Centipede -
	Objects	Mushroom
	Maps	(Cave  •  Nest  •  Shortcuts)  •  (Filtration Node  •  Submerged)
	Safari	Subterranean

Trivia

• It is possible to scale the western fissure via a few methods, most commonly Spears and a Grappling Worm or Explosives.
• The western pit can also be scaled with an Explosive Spear, or while starving and backflipping with a White Squidcada
• It is possible, using TAS tools, to return to Filtration System after reaching the Depths.
• In one of the western entrances to the filtration system, rain doesn't flood the tunnels, letting the Slugcat stay in one area indefinitely.

Maps

• Download all full sized .png visual maps here.

Interactive Map

Made by Henpemaz

Downpour-Exclusive Content
This section contains content exclusive to the Downpour DLC. This content is not available in the base game.

Downpour Maps

Interactive Map

Interactive map ported by Dual, Original by Henpemaz.

Downpour-exclusive content ends here.

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