From Bulbapedia, the community-driven Pokémon encyclopedia.
The Altering Cave (Japanese: へんげのどうくつ Changing Cave) is found in Pokémon FireRed, LeafGreen and Emerald. At first only Zubat can be found in this cave, but by using Mystery Gift with other players, other Pokémon such as Houndour and Stantler can be unlocked. The Altering Cave's wild Pokémon are altered by using Mystery Gift at a Wonder Spot hosted by Nintendo.
In Pokémon FireRed and LeafGreen, Altering Cave is found north of Fortune Island on Outcast Island. In Pokémon Emerald, Altering Cave is found on Route 103, on the east bank of the pond that passes through the center of the route. The entrance of the cave is only open after becoming the Pokémon League Champion. Geographically, the 2 caves are exactly the same, except for their colors.
| 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.
In other languages
- Spanish: Cueva Cambiante
- Italian: Grotta Mutevole