FANDOM


Caustic Sewers
CS

Floors

30

Random

Yes

Weather

No

Boss

Yes

Set Level

No

Secret Room

Yes

Level Range

55 to 70

Sealed Chamber/Silk Chamber

Yes, floor 25

Caustic Sewers, also known as CS, is a dungeon found in the Tanren Undercity. The green water in this dungeon can poison a water, flying, or levitating Pokémon, so bringing a Pokémon with Refresh will help you throughout this dungeon.

Dungeon Parts

 Scenery

Lower Floors

  • Floors 1-11
    Sewerslow

    Lower Floors 1-11

Middle Floors

  • Floors 11-20
    Sewers

    Middle Floors 11-20 and Upper Floors 21-30

Upper Floors

  • Floors 21-30

Pokémon

The Pokémon here are mostly Poison, Ghost, Dark, and Steel.

Lower Floors(1-10):

These floors are mostly pre-evolved pokémon and mid-evolved pokémon.

  • Koffing
  • Ariados
  • Nidorina
  • Nidorino
  • Golbat
  • Haunter
  • Skorupi
  • Seviper
  • Arbok
  • Bronzor
  • Stunky
  • Raticate
  • Gulpin

Middle Floors(11-20):

A few fully evolved pokémon like Gengar and Weezing. There's still a few pre-evolved and mid-evolved pokémon.

  • Gengar
  • Stunky
  • Weezing
  • Ariados
  • Arbok
  • Nidorina
  • Nidorino
  • Crobat
  • Forretress
  • Raticate
  • Koffing
  • Grimer
  • Muk
  • Seviper
  • Haunter
  • Duosion
  • Venomoth
  • Swalot
  • Garbodor
  • Dustox (Night)

Upper Floors(21-30):

The upper floors have many fully evolved pokémon and you can recruit a Trubbish on these floors at Dusk/Night. Also, you can find Trubbish eggs, but they're rare.

  • Nidorina
  • Nidoqueen
  • Nidoking
  • Bronzor
  • Drapion
  • Swalot
  • Stunky
  • Muk
  • Ariados
  • Garbodor
  • Ferrothorn
  • Trubbish (Dusk/Night)
  • Weezing
  • Bronzong

Mystery Eggs:

  • Trubbish (Rare)

Items:

  • Relic Copper
  • Relic Silver
  • Relic Gold
  • Ekop
  • Rotten Apple
  • Kebia Berry
  • Grimy Food
  • Grimy Berry
  • Cleanse Orb
  • Recycle Orb
  • Trawl Orb
  • Mobile Orb
  • Oran Berry

Boss

The boss is a resemblance to Team Skull from Explorers of Time/Darkness/Sky, which are Skuntank, Koffing, and Zubat. Skuntank drops 35 Ekops when it's defeated. Koffing and Zubat drop 1 Tiny Mushroom each.

  • Skuntank
  • Koffing
  • Zubat

Dungeon Objective

As with most dungeons, the goal is to complete it and go to Ancient Caustic Sewers. Caustic Sewers is also a location where a Pink Silk may be obtained. This can be accomplished by unlocking the Sealed Chamber on 25F with a Silver Key and having the contents of the box contained appraised.

CSSR

Secret Room:

  • TM Toxic
  • Poison Dust

Ending box:

  • TM Venoshock
  • Full Restore
  • Big Nugget
  • Max Revive
  • Purity Relic

 Tips

Bring a Pokémon with Refresh.

Purity relic/Safeguard/Status immunity gems are recommended.

There is a kecleon shop at 28f

Trivia

Caustic Sewers has one of the highest level ranges out of all the Tanren Undercity dungeons.

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