These additional Pokémon Hideaways are found throughout the Grand Underground.
Like all hideaways, Pokémon levels scale with your Gym Badges and more Pokémon unlock as you collect TMs and earn badges.
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.
Volcanic Cave
Volcanic Cave is a lava-heated rocky biome home to Fire-type Pokémon.
Only few Pokémon appears here initially, but after obtaining the National Pokédex, many Fire-type Pokémon appear here.
Of interest, Houndoom appears as a rare spawn.
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.
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.
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.
Still-Water Cavern
Still-Water Cavern is a large cavern variant of Riverbank Cave, featuring the same Pokémon on a grander scale.
It offers the same selection of Water-type and forest Pokémon, including Croagunk and the eventual Gible after the Icicle Badge.
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.
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.
