From Bulbapedia, the community-driven Pokémon encyclopedia.

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.

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 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 Emerald 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?

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

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

In the Pokémon Adventures manga

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









