Altering Cave

Altering Cave へんげのどうくつ
Altering Cave
"Wild Missingno. appeared!"
FL Altering Cave.png
Map description: This island has been known by this name since the distant past. No one today knows where it got this name, however.FRLG
Location: Outcast Island (Sevii Islands)
Route 103 (Hoenn)
Region: Sevii Islands and Hoenn
Generations: III
Sevii Islands Altering Cave Map.png
Location of Altering Cave in Sevii Islands.
Pokémon world locations

The Altering Cave (Japanese: へんげのどうくつ Altering Cave) is a mysterious cave found in Pokémon FireRed, LeafGreen, and Emerald.

Altering Cave in Hoenn

Only Zubat can be found in it. It would have been possible for the Altering Cave's wild Pokémon to be altered by using Mystery Gift at a Wonder Spot (hence the cave's name), but this data was never distributed.

In the core series games

Location

In Pokémon FireRed and LeafGreen, Altering Cave is found north of Six Island on Outcast Island.

In Pokémon Emerald, Altering Cave is found on Route 103, on the east bank of the inlet that passes through the center of the route. The entrance of the cave is only open after the player enters the Hall of Fame.

Pokémon

All of the unreleased event Pokémon can be found in the extended area of the Safari Zone in Pokémon Emerald, except for Smeargle, which is found in Artisan Cave at the Battle Frontier. In addition, their evolutionary lines are all available in Pokémon Colosseum as Shadow Pokémon.

Pokémon FireRed and LeafGreen use standard wild held items for the Pokémon in Altering Cave; Pokémon Emerald uses a special set of held items exclusive to the event, which were programmed to have a 5% chance of occurring.

Pokémon Games Location Levels Rate
  Zubat
FR LG E
  Cave
6, 8, 10, 12, 14, 16 100%
Event-exclusive Pokémon (unreleased)
  Mareep
FR LG E
  Cave
3-13 100%
  Aipom
FR LG E
  Cave
18-28 100%
  Pineco
FR LG E
  Cave
19-29 100%
  Shuckle
FR LG E
  Cave
18-28 100%
  Teddiursa
FR LG E
  Cave
18-28 100%
  Houndour
FR LG E
  Cave
12-20 100%
  Stantler
FR LG E
  Cave
18-28 100%
  Smeargle
FR LG E
  Cave
18-28 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Unused event text

This text would appear after the player has used Mystery Gift to receive the extra Pokémon.

FireRed & LeafGreen

Thank you for using the MYSTERY
GIFT System.

Recently, there have been rumors
of rare POKéMON appearances.

The rumors are about ALTERING
CAVE on OUTCAST ISLAND.

Why not visit there and check if
the rumors are indeed true?

Emerald

Thank you for using the MYSTERY
GIFT System.

There appears to be a rumor about
rare POKéMON sightings.

The sightings reportedly came from
the ALTERING CAVE on ROUTE 103.

Perhaps it would be worthwhile for
you to investigate this rumor.


Layout

Version 1F
FireRed  
LeafGreen
Emerald  
 

Music

The background music played inside is Caves of Mt. Moon. This applies to both Pokémon FireRed and LeafGreen and Pokémon Emerald.

In the manga

Pokémon Adventures

FireRed & LeafGreen arc

The Altering Cave was mentioned by Orm in Put Your Beast Foot Forward.

Trivia

  • Had a distribution been held to change the wild Pokémon in Altering Cave, this would have been the only way to obtain the Berry Juice in Generation III, as wild Shuckle are programmed to always be holding it in Pokémon FireRed and LeafGreen, and Shuckle and Aipom would have held it 5% of the time (in Altering Cave only) in Pokémon Emerald. Instead, the item is entirely unobtainable in Generation III.
    • It would also have been the only way to legitimately obtain Mareep that are under level 5 (Down to level 3) in Generation III, since all Pokémon in that generation hatch at level 5, and no other obtainable Mareep within Generation III are under level 5.

In other languages

Language Title
Chinese Cantonese 變化的洞窟 Binfa-dīk Duhngfāt
Mandarin 變化洞窟 / 变化洞窟 Biànhuà Dòngkū
  French Grotte Métamo
  German Wandelhöhle
  Italian Grotta Mutevole
  Korean 요괴의 굴 Altering Cave
  Brazilian Portuguese Caverna da Alteração
  Spanish Cueva Cambiante
  Vietnamese Hang Biến Hóa



Sevii Islands
                 
Settlements
One IslandTwo IslandThree IslandFour IslandFive IslandSix IslandSeven Island
Routes
Treasure BeachKindle RoadCape BrinkBond BridgeThree Isle PortThree Isle PathResort GorgeousWater Labyrinth
Five Isle MeadowMemorial PillarOutcast IslandGreen PathWater PathRuin ValleyTrainer TowerCanyon Entrance
Sevault CanyonTanoby Ruins
Landmarks
Mt. EmberBerry ForestIcefall CaveRocket WarehouseLost CaveAltering CavePattern Bush
Dotted HoleTanoby KeyTanoby ChambersNavel RockBirth Island
Access to
Kanto


Hoenn
               
Settlements
Littleroot TownOldale TownPetalburg CityRustboro CityDewford TownSlateport CityMauville CityVerdanturf Town
Fallarbor TownLavaridge TownFortree CityLilycove CityMossdeep CitySootopolis CityPacifidlog TownEver Grande City
Battle FrontierBattle Resort
Routes
101102103104105106107108109110111112113114115116117118
119120121122123124125126127128129130131132133134Underwater
Landmarks
Petalburg WoodsRusturf TunnelIsland CaveGranite CaveAbandoned ShipSea MauvilleOceanic Museum
Seaside Cycling RoadTrick HouseMauville Game CornerNew MauvilleTrainer HillDesert RuinsMirage TowerFiery Path
Jagged PassMt. ChimneyDesert UnderpassMeteor FallsWeather InstituteScorched SlabAncient TombSafari ZoneMt. Pyre
Lilycove MuseumShoal CaveTeam Aqua Hideout • Team Magma Hideout (LilycoveJagged Pass) • Mossdeep Space CenterSeafloor Cavern
Cave of OriginMirage IslandSky PillarVictory RoadPokémon LeagueSealed ChamberArtisan CaveAltering CaveSouthern Island
Marine CaveTerra CaveContest HallBattle MaisonBattle TowerBattle TentSecret IsletSecret MeadowSecret Shore
Mirage spots

Mirage CavesMirage ForestsMirage IslandsMirage Mountains
Crescent IsleFabled CaveGnarled DenNameless CavernPathless PlainTrackless Forest

Access to
Birth IslandFaraway IslandNavel RockSky


  This article is part of Project Locations, a Bulbapedia project that aims to write comprehensive articles on every location in the Pokémon world.