Cerulean Cave HGSS · Kanto Area
Cerulean Cave is the Pokémon League-managed cave just outside Cerulean City, reached by surfing from Route 24. A guard admits only trainers who have earned all 16 Badges. Rebuilt for HGSS, it spans 1F, 2F and B1F, is full of high-level Pokémon, and hides Mewtwo at its deepest point.
- Region
- Kanto
- Wild Pokémon
- 19
- Items
- 25
- Trainers
- 0
- HMs
- Surf, Rock Smash, Rock Climb
Connects to: Cerulean City
Cerulean Cave on the Kanto Pokégear map (marked at Cerulean City)
Gift, legendary and roaming Pokémon
Mewtwo Lv. 70 · One-off encounter · B1FIn the depths of Cerulean Cave (B1F), which opens once you have all 16 Badges; Surf there from Route 24.
Wild Pokémon
1F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
 Golbat | Poison | 38–39 | 10% | 10% | 50% |
 Machoke | Fighting | 39–40 | 24% | 24% | 6% |
 Parasect | BugGrass | 38 | 20% | 20% | 10% |
 PrimeapeHG | Fighting | 38–39 | 14% | 14% | 4% |
 Magneton | ElectricSteel | 39–40 | 11% | 11% | 10% |
 Ditto | Normal | 39–40 | 11% | 11% | 10% |
 Electrode | Electric | 40 | 5% | 5% | 5% |
 Wobbuffet | Psychic | 37 | 5% | 5% | 5% |
 PersianSS | Normal | 38–39 | 14% | 14% | 4% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod |  Magikarp | 10 | 100% |
| Good Rod |  Poliwag | 20 | 45% |
 Goldeen | 20 | 40% | |
| Magikarp | 20 | 15% | |
| Super Rod | Poliwag | 40 | 40% |
 Poliwhirl | 40 | 30% | |
 Gyarados | 40 | 30% |
2F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
| Parasect | BugGrass | 40 | 20% | 20% | 20% |
 Kadabra | Psychic | 42 | 20% | 20% | 20% |
| Machoke | Fighting | 39–42 | 20% | 20% | 10% |
| Golbat | Poison | 41–42 | 10% | 10% | 20% |
| Magneton | ElectricSteel | 41 | 10% | 10% | 10% |
| Ditto | Normal | 42 | 10% | 10% | 10% |
| Electrode | Electric | 41 | 5% | 5% | 5% |
| Wobbuffet | Psychic | 42 | 5% | 5% | 5% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod | Magikarp | 10 | 100% |
| Good Rod | Poliwag | 20 | 45% |
| Goldeen | 20 | 40% | |
| Magikarp | 20 | 15% | |
| Super Rod | Poliwag | 40 | 40% |
| Poliwhirl | 40 | 30% | |
| Gyarados | 40 | 30% |
B1F
| Pokémon | Type | Lv. | Morning | Day | Night |
|---|---|---|---|---|---|
| Parasect | BugGrass | 45–47 | 25% | 25% | 25% |
| Kadabra | Psychic | 46 | 20% | 20% | 20% |
| Magneton | ElectricSteel | 45–47 | 15% | 15% | 15% |
| Golbat | Poison | 47 | 10% | 10% | 10% |
| Machoke | Fighting | 45 | 10% | 10% | 10% |
| Ditto | Normal | 45 | 10% | 10% | 10% |
| Electrode | Electric | 46 | 5% | 5% | 5% |
| Wobbuffet | Psychic | 49 | 5% | 5% | 5% |
| Rod | Pokémon | Lv. | Chance |
|---|---|---|---|
| Old Rod | Magikarp | 10 | 100% |
| Good Rod | Poliwag | 20 | 45% |
| Goldeen | 20 | 40% | |
| Magikarp | 20 | 15% | |
| Super Rod | Poliwag | 40 | 40% |
| Poliwhirl | 40 | 30% | |
| Gyarados | 40 | 30% |
Chances are the game’s encounter slots: grass and caves 20/20/10/10/10/10/5/5/4/4/1/1, with every slot changing by time of day (morning 4:00–9:59, day 10:00–19:59, night 20:00–3:59); surfing 60/30/5/4/1; all three rods 40/30/15/10/5; Rock Smash 80/20; Headbutt 50/15/15/10/5/5. HG and SS mark Pokémon found in only one version. Where to find every Pokémon.
Items
| Item | How | Where |
|---|---|---|
| Max Elixir | Item ball | 1F |
| Nugget | Item ball | 1F |
| Full Restore | Item ball | 1F |
| Sea Incense | Item ball | 1F |
| Hyper Potion | Hidden | 1F |
| Rare Candy | Hidden | 1F |
| Revive | Hidden | 1F |
| PP Up | Item ball | 2F |
| TM24 Thunderbolt | Item ball | 2F |
| Ultra Ball | Item ball | 2F |
| Odd Incense | Item ball | 2F |
| Ultra Ball | Hidden | 2F |
| PP Up | Hidden | 2F |
| Big Pearl | Hidden | 2F |
| Zinc | Hidden | 2F |
| Full Heal | Hidden | 2F |
| Protein | Hidden | 2F |
| Max Revive | Item ball | B1F |
| Ultra Ball | Item ball | B1F |
| Dusk Stone | Item ball | B1F |
| Electirizer | Item ball | B1F |
| Black Sludge | Item ball | B1F |
| Max Revive | Hidden | B1F |
| Ultra Ball | Hidden | B1F |
| Nugget | Hidden | B1F |
Hidden items can be found with the Dowsing MCHN Pokégear app.
Tips
- Mewtwo (Lv70) waits at a dead end on B1F, past the ladders around the underground lake.
- You need all 16 Badges before the guard lets you in, so the cave opens at the same point as Mt. Silver.
- TM24 Thunderbolt is on 2F, behind rocks you clear with Rock Smash.
- The Electirizer and a Dusk Stone are on B1F and need Rock Climb.
- Ditto appears on every floor at 10–11%, and Wobbuffet at 5%.
- Primeape lives on 1F only in HeartGold, and Persian takes its place in SoulSilver.
Walkthrough: Part 24: Legendary Pokémon and Kanto Loose Ends
More pictures
FAQ
How do you get into Cerulean Cave in HeartGold and SoulSilver?
Earn all 16 Badges, then Surf from Route 24 to the cave entrance; the guard steps aside for you.
What level is Mewtwo in HGSS?
Level 70, at the deepest point of B1F.
Where is TM24 Thunderbolt in HGSS?
On Cerulean Cave 2F, behind rocks you clear with Rock Smash.
Where do you get the Electirizer in HeartGold and SoulSilver?
On B1F of Cerulean Cave, in a spot you reach with Rock Climb.
What Pokémon can you catch in Cerulean Cave in HeartGold and SoulSilver?
19 species: Golbat, Machoke, Parasect, Primeape, Magneton, Ditto, Electrode, Wobbuffet, Persian, Psyduck, Golduck, Geodude, Graveler, Magikarp, Poliwag, Goldeen, Poliwhirl, Gyarados, Kadabra.
Sources & picture credits
Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts and shops come from the pret/pokeheartgold decompilation, and the Pokémon sprites and dungeon entrance pictures are drawn from the game’s own graphics in it. The position maps are the Gold/Silver wiki’s Pokégear map renders. Location pictures and trainer sprites © Nintendo / Creatures / GAME FREAK, archived from the Pokémon Wiki on Fandom (listed on the image gallery).