Cerulean Cave

Cerulean Cave (Japanese: ハナダのどうくつ Hanada Cave), sometimes referred to as the Unknown Dungeon (Japanese: ななしのどうくつ Nameless Cave) in Generation I, is a cave located northwest of Cerulean City in Kanto. The cave is home to a wide variety of high-level wild Pokémon. Only trainers who compete and win in the Pokémon League at Indigo Plateau may enter due to the potency of the Pokémon in the cave. At the end of the cave lies Mewtwo, the only one of its species in the game.

Cerulean Cave has had many different layouts over time, getting a change from not only one Generation to the next, but also from one game release to the next. In Pokémon FireRed and LeafGreen, the layout is true to that of the original Red and Green games, aside from the addition of Rock Smash boulders.

Another addition in FireRed/LeafGreen lies in the fact that trainers are now required to further prove themselves before entering the cave, which is done by completing the quest on Sevii Islands and restoring the Network Machine to operational status. Another change is in the fact that more Pokémon can be found only by fishing, while wild Pokémon found just by walking around in the cave are reduced in number. In Generation I, there are also several species that make no sense to be in the cave, such as Dodrio and Pokémon that are otherwise only obtainable by stone-induced evolution, however, this has been fixed in Generation III, at the cost of some of the wild Pokémon diversity.

In Generation II Cerulean Cave completely collapsed. However, the leftovers of Mewtwo's presence can still be found in the lake near the cave, in the form of the item Berserk Gene.

Items

Generation I

Pokémon Red, Green and Blue

• Full Restore: on the riverbank near the southwest corner of the first floor; center of the second floor
• Max Elixir: on the riverbank on the first floor
• Max Revive: north edge of the basement
• Nugget: near the northwest corner of the first floor
• PP Up: east edge of the second floor
• Ultra Ball: southwest corner of the second floor; center of the basement

Pokémon Yellow

• Full Restore: east edge of the second floor
• Max Elixir: west of the entrance on the first floor; north edge of the basement
• Max Revive: east edge of the first floor; southeast of the second floor's center; center of an elevated area in the basement
• Rare Candy: southeast corner of the first floor; west edge of the second floor
• Ultra Ball: center of the first floor; center of the second floor; center of an elevated area in the basement; northeast corner of the basement

Generation III

• Full Restore: on the riverbank near the southwest corner of the first floor; against the eastern edge of the second floor
• Max Elixir: near the center of the first floor
• Max Revive: in the northeast corner of the basement
• Nugget: in the northwest corner of the first floor
• PP Up: near the southwest corner of the second floor
• Ultra Ball: near the southeast corner of the second floor; near the center of the basement

Pokémon

Generation I

Pokémon		Games			Location	Levels	Rate
	Arbok	R	B	Y	Cave	52, 57	5-10%
	Raichu	R	B	Y	Cave	53, 64	4-10%
	Sandslash	R	B	Y	Cave	52(B) 54(Y)	10%
	Wigglytuff	R	B	Y	Cave	54	5%
	Golbat	R	B	Y	Cave	46 (RB) 52-59 (Y)	25%(RB) 40%(Y)
	Gloom	R	B	Y	Cave	55-58	5-10%
	Parasect	R	B	Y	Cave	52, 64 (RB) 54 (Y)	5-10%
	Venomoth	R	B	Y	Cave	49, 51(RB) 54(Y)	5%(RB) 10-15%(Y)
	Kadabra	R	B	Y	Cave	49, 51	5-15%
	Weepinbell	R	B	Y	Cave	55-58	5-10%
	Graveler	R	B	Y	Cave	45-55	15%
	Magneton	R	B	Y	Cave	46	15%
	Dodrio	R	B	Y	Cave	49, 51	10-25%
	Hypno	R	B	Y	Cave	46	15%
	Electrode	R	B	Y	Cave	52, 55	10-15%
	Marowak	R	B	Y	Cave	52, 55	10-15%
	Lickitung	R	B	Y	Cave	52-55	10-15%
	Rhyhorn	R	B	Y	Cave	50-52	10
	Rhydon	R	B	Y	Cave	52, 55(RB) 58-62(Y)	10-25%(RB) 5-10%(Y)
	Chansey	R	B	Y	Cave	56, 64(RB) 56(Y)	5-10%(RB) 5%(Y)
	Ditto	R	B	Y	Cave	53-67(RB) 55-65(Y)	1-10%(RB) 5-15%
	Mewtwo	R	B	Y	Cave	70	Only one
Surfing and Fishing
	Slowbro	R	B	Y	Cave	23	25%
	Kingler	R	B	Y	Cave	23	25%
	Seadra	R	B	Y	Cave	23	25%
	Goldeen	R	B	Y	Cave	25-30	40%
	Seaking	R	B	Y	Cave	23(RB) 35-60(Y)	25%(RB) 60%(Y)
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.

Generation III

Pokémon		Games		Location	Levels	Rate
	Golbat	FR	LG	Floor 1 Floor 2 Basement		14% 25% 11%
	Parasect	FR	LG	Floor 1 Floor 2/B		25% 14%
	Primeape	FR	LG	Floor 1		11%
	Kadabra	FR	LG	Floor 1 Basement		11% 25%
	Machoke	FR	LG	Floor 1/B Floor 2		10% 20%
	Geodude	FR	LG	Rock Smash		65%
	Graveler	FR	LG	Rock Smash		35%
	Magneton	FR	LG	Floor 1 F2/Basement		20% 10%
	Electrode	FR	LG	Floor 1 F2/Basement		5% 4%
	Ditto	FR	LG	Floor 1/2 Basement		11% 25%
	Mewtwo	FR	LG	Basement	70	Only one
	Wobbuffet	FR	LG	Floor 1 Floor 2 Basement		4% 5% 1%
Surfing and Fishing
	Psyduck	FR	LG	Fishing (Super)* Surfing		5% 4% 65%
	Golduck	FR	LG	Surfing		35%
	Poliwag	FR	LG	Fishing (Good/Super)		60% 40%
	Slowpoke	FR	LG	Fishing (Super)* Surfing		5% 4% 65
	Slowbro	FR	LG	Surfing		35%
	Goldeen	FR	LG	Fishing (Good)		20%
	Magikarp	FR	LG	Fishing (Old/Good)		100% 20%
	Gyarados	FR	LG	Fishing (Super)*		15% 16%
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.

*=Indicates catch rate varies by floor. Rates are listed for Floor 1, followed by the Basement in that order.

Differences among generations

The layout of the cave has been tweaked several times in the past, particularly in Generation I, however the most recent layout (depicted in FireRed and LeafGreen) looks exactly like the design in the Japanese versions of Red and Green but with stepped up graphics.

Trivia

• In Generation I, any Pokémon that can only be found in the Cerulean Cave is listed as "area unknown" in the Pokédex. This was fixed in Generation III, however.

In other languages

• Spanish: Mazmorra Rara (Generation I) and Cueva Celeste (Generation III)
• Italian: Grotta Celeste
• German: Azuria-Höhle
• French: Grotte Azurée

References

• Psypoke Psydex - Pokémon catch rates

Kanto
Settlements Pallet Town • Viridian City • Pewter City • Cerulean City • Vermilion City • Lavender Town Celadon City • Saffron City • Fuchsia City • Cinnabar Island • Indigo Plateau Routes 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 Landmarks Professor Oak's Laboratory • Viridian Forest • Diglett's Cave • Pewter Museum of Science • Mt. Moon (Square) • Cerulean Cave Underground Path (Kanto Routes 5–6) • Underground Path (Kanto Routes 7–8) • S.S. Anne • S.S. Aqua • Sea Cottage • Rock Tunnel Power Plant • Cycling Road/Pokémon Road • Team Rocket Hideout • Silph Co. • Magnet Train • Pokémon Tower • Safari Zone/Pal Park GO Park • Seafoam Islands • Pokémon Mansion • Cinnabar Lab • Pokémon League Reception Gate • Victory Road • Tohjo Falls Access to Sevii Islands • Johto

This article is part of Project Locations, a Bulbapedia project that aims to write comprehensive articles on every location in the Pokémon world.