Cerulean Cave

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Cerulean Cave (Japanese: ハナダのどうくつ, Hepburn: Hanada no Dōkutsu), also officially named the "Unknown Dungeon" (Japanese: ななしのどうくつ, Hepburn: Nanashi no Dōkutsu) is a location introduced in Generation I.

Description

Cerulean Cave is in the northwest of Cerulean City in the Kanto region. A level 70 Mewtwo is encountered on the first floor.

By default, there is a non-playable character blocking the entrance to Cerulean Cave, since entering it requires one to be victorious in the Pokémon League. In Pokémon FireRed Version and Pokémon LeafGreen Version, this goes even farther in that one has to also complete the Sevii Islands quest.

In Pokémon Gold Version and Pokémon Silver Version, the entrance to Cerulean Cave is flooded by water. A Hiker in Cerulean City tells the player's character that a nearby cave, referring to Cerulean Cave, has caved in recently. The Berserk Gene is one of the more notable items that can be obtained.

Pokémon

Walking

Generation I

1F

Pokémon		Games			Level	Rate
	Arbok	R	B	Yl	52	10%
	Raichu	R	B	Yl	53	4%
	Sandslash	R	B	Yl	52	10%
	Golbat	R	B	Yl	46	20%
	Golbat	R	B	Yl	50, 55	40%
	Gloom	R	B	Yl	55	10%
	Parasect	R	B	Yl	52	5%
	Parasect	R	B	Yl	54	5%
	Venomoth	R	B	Yl	49	10%
	Venomoth	R	B	Yl	54	5%
	Kadabra	R	B	Yl	49	5%
	Weepinbell	R	B	Yl	55	10%
	Graveler	R	B	Yl	45	15%
	Magneton	R	B	Yl	46	15%
	Dodrio	R	B	Yl	49	10%
	Hypno	R	B	Yl	46	20%
	Ditto	R	B	Yl	53	1%
	Ditto	R	B	Yl	55, 60	5%

2F

Pokémon		Games			Level	Rate
	Sandslash	R	B	Yl	56	10%
	Wigglytuff	R	B	Yl	54	5%
	Golbat	R	B	Yl	52, 57	40%
	Gloom	R	B	Yl	58	5%
	Venomoth	R	B	Yl	51	20%
	Kadabra	R	B	Yl	51	15%
	Weepinbell	R	B	Yl	58	5%
	Graveler	R	B	Yl	50	15%
	Dodrio	R	B	Yl	51	20%
	Electrode	R	B	Yl	52	10%
	Marowak	R	B	Yl	52	10%
	Rhyhorn	R	B	Yl	50	10%
	Rhydon	R	B	Yl	52	10%
	Rhydon	R	B	Yl	58, 60	5%
	Chansey	R	B	Yl	56	5%
	Ditto	R	B	Yl	55, 60	5%
	Ditto	R	B	Yl	60	10%

B1F

Pokémon		Games			Level	Rate
	Arbok	R	B	Yl	57	5%
	Raichu	R	B	Yl	64	10%
	Sandslash	R	B	Yl	57	5%
	Golbat	R	B	Yl	54, 59	40%
	Parasect	R	B	Yl	64	10%
	Graveler	R	B	Yl	55	15%
	Electrode	R	B	Yl	55	15%
	Marowak	R	B	Yl	55	20%
	Lickitung	R	B	Yl	50, 55	5%
	Rhyhorn	R	B	Yl	52	10%
	Rhydon	R	B	Yl	55	20%
	Rhydon	R	B	Yl	62	10%
	Chansey	R	B	Yl	64	10%
	Chansey	R	B	Yl	56	5%
	Ditto	R	B	Yl	63, 65, 67	10%
	Ditto	R	B	Yl	60, 65	15%

Pokémon FireRed Version and Pokémon LeafGreen Version

1F

Pokémon		Games		Level	Rate
	Parasect	FR	LG	49, 58	25%
	Magneton	FR	LG	49	20%
	Golbat	FR	LG	46, 55	14%
	Primeape	FR	LG	52, 61	11%
	Ditto	FR	LG	52, 61	11%
	Machoke	FR	LG	46	10%
	Electrode	FR	LG	58	5%
	Wobbuffet	FR	LG	55	4%

2F

Pokémon		Games		Level	Rate
	Golbat	FR	LG	49, 58	25%
	Machoke	FR	LG	49	20%
	Parasect	FR	LG	52, 61	14%
	Kadabra	FR	LG	55, 64	11%
	Ditto	FR	LG	55, 64	11%
	Magneton	FR	LG	52	10%
	Wobbuffet	FR	LG	58	5%
	Electrode	FR	LG	61	4%

B1F

Pokémon		Games		Level	Rate
	Kadabra	FR	LG	58, 67	25%
	Ditto	FR	LG	58, 67	25%
	Parasect	FR	LG	55, 64	14%
	Golbat	FR	LG	52, 61	11%
	Machoke	FR	LG	52	10%
	Magneton	FR	LG	55	10%
	Electrode	FR	LG	64	4%
	Wobbuffet	FR	LG	61	1%

Pokémon HeartGold Version and Pokémon SoulSilver Version

1F

Pokémon		Games		Level	Rate
					Morning	Day	Night
	Electrode	HG	SS	40	5%
	Wobbuffet	HG	SS	37	5%
	Machoke	HG	SS	39–40	24%	24%	6%
	Parasect	HG	SS	38	20%	20%	10%
	Primeape	HG	SS	38–39	14%	14%	0%
	Primeape	HG	SS	39	0%	0%	4%
	Persian	HG	SS	38–39	14%	14%	0%
	Persian	HG	SS	39	0%	0%	4%
	Magneton	HG	SS	39–40	11%	11%	0%
	Magneton	HG	SS	40	0%	0%	10%
	Ditto	HG	SS	39–40	11%	11%	0%
	Ditto	HG	SS	39	0%	0%	10%
	Golbat	HG	SS	38	10%	10%	0%
	Golbat	HG	SS	38–39	0%	0%	50%

2F

Pokémon		Games		Level	Rate
					Morning	Day	Night
	Golbat	HG	SS	41	10%	10%	0%
	Golbat	HG	SS	41–42	0%	0%	20%
	Parasect	HG	SS	40	20%
	Kadabra	HG	SS	42	20%
	Machoke	HG	SS	39, 41–42	20%	20%	0%
	Machoke	HG	SS	39	0%	0%	10%
	Magneton	HG	SS	41	10%
	Electrode	HG	SS	41	5%
	Ditto	HG	SS	42	10%
	Wobbuffet	HG	SS	42	5%

B1F

Pokémon		Games		Level	Rate
					Morning	Day	Night
	Parasect	HG	SS	45, 47	25%
	Kadabra	HG	SS	46	20%
	Magneton	HG	SS	45, 47	15%
	Golbat	HG	SS	47	10%
	Machoke	HG	SS	45	10%
	Ditto	HG	SS	45	10%
	Electrode	HG	SS	46	5%
	Wobbuffet	HG	SS	49	5%

Pokémon: Let's Go, Pikachu! and Pokémon: Let's Go, Eevee!

1F

Pokémon		Games		Level	Rate
	Zubat	P	E	51–56	10%
	Golbat	P	E	51–56	15%
	Psyduck	P	E	51–56	5%
	Golduck	P	E	51–56	15%
	Geodude	P	E	51–56	10%
	Graveler	P	E	51–56	15%
	Lickitung	P	E	51–56	10%
	Rhyhorn	P	E	51–56	10%
	Rhydon	P	E	51–56	5%
	Ditto	P	E	51–56	5%

2F

Pokémon		Games		Level	Rate
	Zubat	P	E	51–56	5%
	Golbat	P	E	51–56	20%
	Geodude	P	E	51–56	5%
	Graveler	P	E	51–56	20%
	Lickitung	P	E	51–56	15%
	Rhyhorn	P	E	51–56	10%
	Rhydon	P	E	51–56	10%
	Chansey	P	E	51–56	10%
	Ditto	P	E	51–56	5%

B1F

Pokémon		Games		Level	Rate
	Zubat	P	E	51–56	10%
	Golbat	P	E	51–56	15%
	Psyduck	P	E	51–56	5%
	Golduck	P	E	51–56	15%
	Geodude	P	E	51–56	10%
	Graveler	P	E	51–56	15%
	Lickitung	P	E	51–56	10%
	Rhyhorn	P	E	51–56	10%
	Rhydon	P	E	51–56	5%
	Ditto	P	E	51–56	5%

Rare Spawns

Pokémon: Let's Go, Pikachu! and Pokémon: Let's Go, Eevee!

Pokémon		Games		Level	Rate
	Snorlax	P	E	51–56	–%

Surfing

Pokémon FireRed Version and Pokémon LeafGreen Version

1F

Pokémon		Games		Level	Rate
	Psyduck	FR	LG	30–50	65%
	Slowpoke	FR	LG	30–50	65%
	Golduck	FR	LG	40–55	35%
	Slowbro	FR	LG	40–55	35%

B1F

Pokémon		Games		Level	Rate
	Psyduck	FR	LG	40–60	65%
	Slowpoke	FR	LG	40–60	65%
	Golduck	FR	LG	50–65	35%
	Slowbro	FR	LG	50–65	35%

Fishing

Generation I

1F

B1F

Pokémon FireRed Version and Pokémon LeafGreen Version

1F

B1F

Pokémon HeartGold Version and Pokémon SoulSilver Version

1F

B1F

Rock Smash

Pokémon FireRed Version and Pokémon LeafGreen Version

1F

Pokémon		Games		Level	Rate
	Geodude	FR	LG	40–60	65%
	Graveler	FR	LG	50–65	35%

B1F

Pokémon		Games		Level	Rate
	Geodude	FR	LG	40–60	65%
	Graveler	FR	LG	50–65	35%

Pokémon HeartGold Version and Pokémon SoulSilver Version

1F

Pokémon		Games		Level	Rate
					Morning	Day	Night
	Geodude	HG	SS	22–24	80%
	Graveler	HG	SS	26–30	20%

B1F

Pokémon		Games		Level	Rate
					Morning	Day	Night
	Geodude	HG	SS	22–24	80%
	Graveler	HG	SS	26–30	20%

Special encounters

Generation I

Mewtwo
Base article	Type	Psychic
	Level	70
Moves	Swift	Psychic
	Barrier	Recover

Pokémon FireRed Version and Pokémon LeafGreen Version

Mewtwo
Base article	Type	Psychic
	Gender	Genderless
	Level	70
	Ability	Pressure
	Item	None
	Moves	Swift	Recover
Safeguard		Psychic

Pokémon HeartGold Version and Pokémon SoulSilver Version

Mewtwo
Base article	Type	Psychic
	Gender	Genderless
	Level	70
	Ability	Pressure
	Item	None
	Moves	Paychic Cut	Amnesia
Power Swap		Guard Swap

Pokémon: Let's Go, Pikachu! and Pokémon: Let's Go, Eevee!

Mewtwo
Base article	Type	Psychic
	Gender	Genderless
	Level	70
	Ability	Pressure
	Item	None
	Moves	Swift	Amnesia
Recover		Psychic

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

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. Whether this was intended or just a glitch is unknown (most likely a glitch).
• Though its design varies with each iteration, the version of it found in Pokémon FireRed and LeafGreen and Pokémon HeartGold and SoulSilver is very similar to the one in the original Pokémon Red and Green, which was never released outside of Japan. The only difference is the Generation III addition of Rock Smash boulders.
• In Generation II, Cerulean Cave was inaccessible. A NPC nearby states how the cave collapsed in between Generation I and Generation II.

In other languages

Language	Name
English	Cerulean Cave
Spanish	Cueva Celeste
Italian	Grotta Celeste
French	Caverne Azurée
German	Azuria-Höhle
Japanese	ハナダの洞窟
Korean	블루시티동굴

v · d · e List of Kanto locations
Characters · Pokédex
Settlements	Cerulean City Cerulean Cave Celadon City Game Corner Rocket Hideout Cinnabar Island Pokémon Mansion Fuchsia City Safari ZoneRBY/FRLG Pal ParkHGSS GO ParkPE Lavender Town Pokémon Tower Pallet Town Pewter City Saffron City Silph Co. Vermilion City S.S. AnneRBY/FRLG/PE S.S. AquaGSC/HGSS Viridian City Viridian Forest
Pokémon League	Indigo Plateau
Routes	1 2 3 4 5 6 7 8 9 10 Power Plant 11 12 13 14 15 16 17 18 19 20 Seafoam Islands 21 22 23 24 25 26GSC/HGSS 27GSC/HGSS 28GSC/HGSS
Tunnels and Mountains	Diglett's Cave Mt. Moon Rock Tunnel Victory Road Tohjo FallsGSC/HGSS
See also	Sevii Islands Johto Hoenn Sinnoh Battle Zone Hisui Unova Kalos Alola Galar Isle of Armor Crown Tundra Paldea Kitakami Terarium
Regions