Altering Cave
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. Only Zubat can be found in it, but it would have been possible for the Altering Cave's wild Pokémon to be altered by using Mystery Gift at a Wonder Spot hosted by Nintendo, hence its name. Despite this, no country has ever held an event to make use of this feature.
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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 | |||
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Location: | Outcast Island (Sevii Islands) Route 103 (Hoenn) | |||
Region: | Sevii Islands and Hoenn | |||
Generations: | IIIFRLGE | |||
![]() Location of Altering Cave in Sevii Islands. | ||||
Pokémon world locations |

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 | Games | Location | Levels | Rate | |||||||||||
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FR | LG | E |
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6, 8, 10, 12, 14, 16 | 100% | |||||||||
Event-exclusive Pokémon (unreleased) | |||||||||||||||
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FR | LG | E |
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3-13 | 100% | |||||||||
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FR | LG | E |
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18-28 | 100% | |||||||||
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FR | LG | E |
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19-29 | 100% | |||||||||
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FR | LG | E |
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18-28 | 100% | |||||||||
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FR | LG | E |
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18-28 | 100% | |||||||||
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FR | LG | E |
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12-20 | 100% | |||||||||
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FR | LG | E |
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18-28 | 100% | |||||||||
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FR | LG | E |
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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 | Emerald |
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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
FireRed & LeafGreen chapter
The Altering Cave was mentioned by Orm in Put Your Beast Foot Forward.
Trivia
- Had the distribution been used, then encountering Shuckle in this area would have been the only way to obtain the Berry Juice in Generation III. Instead, the item is entirely unobtainable.
In other languages
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Sevii Islands | |||||||||
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This article is part of Project Locations, a Bulbapedia project that aims to write comprehensive articles on every location in the Pokémon world. |