Altering Cave

The Altering Cave (Japanese: へんげのどうくつ Changing Cave) is found in Pokémon Emerald, FireRed and LeafGreen. At first only Zubat can be found in this cave, but by using Mystery Gift other Pokémon such as Houndour and Stantler can be unlocked.

Locations

In Pokémon FireRed and Pokémon 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.

Hoenn
Gym:	Rustboro City \| Dewford Town \| Mauville City \| Lavaridge Town \| Petalburg City \| Fortree City \| Mossdeep City \| Sootopolis City
Other:	Littleroot Town \| Oldale Town \| Slateport City \| Verdanturf Town \| Fallarbor Town \| Lilycove City \| Pacifidlog Town
League:	Ever Grande City
Routes:	101 \| 102 \| 103 \| 104 \| 105 \| 106 \| 107 \| 108 \| 109 \| 110 \| 111 \| 112 \| 113 \| 114 \| 115 \| 116 \| 117
	118 \| 119 \| 120 \| 121 \| 122 \| 123 \| 124 \| 125 \| 126 \| 127 \| 128 \| 129 \| 130 \| 131 \| 132 \| 133 \| 134
	Underwater
Landmarks:	Petalburg Woods \| Rusturf Tunnel \| Island Cave \| Granite Cave \| Abandoned Ship \| Seaside Cycling Road \| New Mauville \| Desert \| Desert Ruins
	Mirage Tower \| Trainer Hill \| Fiery Path \| Jagged Pass \| Mt. Chimney \| Desert Underpass \| Meteor Falls \| Weather Institute \| Scorched Slab
	Ancient Tomb \| Safari Zone \| Mt. Pyre \| Shoal Cave \| Aqua Hideout \| Magma Hideout \| Seafloor Cavern \| Cave of Origin \| Sky Pillar
	Victory Road \| Sealed Chamber \| Battle Tower/Frontier \| Altering Cave \| Mirage Island \| Southern Island \| Marine Cave \| Terra Cave

The Sevii Islands
Islands:	Knot \| Boon \| Kin \| Floe \| Chrono \| Fortune \| Quest \| Navel \| Birth
Towns:	One Island \| Two Island \| Three Island \| Four Island \| Five Island \| Six Island \| Seven Island
Routes:	Treasure Beach \| Kindle Road \| Cape Brink \| Bond Bridge \| Three Isle Port \| Three Isle Path
	Resort Gorgeous \| Water Labyrinth \| Five Isle Meadow \| Memorial Pillar \| Outcast Island \| Green Path
	Water Path \| Ruin Valley \| Trainer Tower \| Canyon Entrance \| Sevault Canyon \| Tanoby Ruins
Landmarks:	Mt. Ember \| Berry Forest \| Icefall Cave \| Rocket Warehouse \| Lost Cave
Landmarks:	Altering Cave \| Pattern Bush \| Dotted Hole \| Tanoby Key \| Tanoby Chambers

The Sevii Islands
Islands:	Knot \| Boon \| Kin \| Floe \| Chrono \| Fortune \| Quest \| Navel \| Birth
Towns:	One Island \| Two Island \| Three Island \| Four Island \| Five Island \| Six Island \| Seven Island
Routes:	Treasure Beach \| Kindle Road \| Cape Brink \| Bond Bridge \| Three Isle Port \| Three Isle Path
	Resort Gorgeous \| Water Labyrinth \| Five Isle Meadow \| Memorial Pillar \| Outcast Island \| Green Path
	Water Path \| Ruin Valley \| Trainer Tower \| Canyon Entrance \| Sevault Canyon \| Tanoby Ruins
Landmarks:	Mt. Ember \| Berry Forest \| Icefall Cave \| Rocket Warehouse \| Lost Cave
Landmarks:	Altering Cave \| Pattern Bush \| Dotted Hole \| Tanoby Key \| Tanoby Chambers