Cerulean Cave

The Unknown Dungeon, also called Cerulean Cave due to being near Cerulean City, is home to high-level wild Pokémon. Only trainers who compete and win in the Pokémon League at Indigo Plateu may enter.

The Unknown Dungeon has had many different layouts, getting a change from one game release to the next.

Pokémon that Appear in the Unknown Dungeon

Pokémon Red/Blue

• Arbok (Red only)
• Chansey
• Clefable (Japanese Blue only)
• Ditto
• Dodrio
• Electrode
• Golbat
• Hypno
• Kadabra
• Magneton
• Marowak
• Parasect
• Raichu
• Raticate (Japanese Blue only)
• Rhydon
• Sandslash (Blue and Japanese Blue only)
• Venomoth
• Wigglytuff

Pokémon Yellow

• Chansey
• Ditto
• Gloom
• Golbat
• Graveler
• Lickitung
• Parasect
• Rhydon
• Rhyhorn
• Sandslash
• Venomoth
• Weepinbell

Pokémon FireRed/LeafGreen

• Ditto
• Electrode
• Golbat
• Machoke
• Magneton
• Parasect
• Primeape
• Wobbuffet
• Psyduck (Surf, Fishing, FireRed only)
• Golduck (Surf, Fishing, FireRed only)
• Slowpoke (Surf, LeafGreen only)
• Slowbro (Surf, LeafGreen only)
• Geodude (Rock Smash)
• Graveler (Rock Smash)
• Magikarp (Fishing)
• Poliwag (Fishing)
• Poliwhirl (Fishing)
• Goldeen (Fishing)
• Gyarados (Fishing)

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