Underground Ruins Black 2 & White 2
Black 2/White 2 ruins inside Clay Tunnel whose three chambers hold Regirock, Regice and Registeel.
- Type
- Cave
- Stage
- Post-game & optional
- Pokémon
- 8 species
- Regirock appears after solving a puzzle
- Iron Key (Black 2) opens Registeel; Iceberg Key (White 2) opens Regice
- Missing keys can be shared via Unova Link
- Catching all three unlocks Regigigas in Twist Mountain
Connects to: Clay Tunnel
Pokémon in Underground Ruins
Grass / walking 24
| Pokémon | Area | Level | Rate | Version |
|---|---|---|---|---|
 BoldoreRock | Main area | 54–56 | 35% | Both |
 DurantBug / Steel | Main area | 54 | 20% | Both |
 NosepassRock | Main area | 55–57 | 15% | Both |
 LaironSteel / Rock | Main area | 55–57 | 15% | Both |
 WoobatPsychic / Flying | Main area | 54 | 10% | Both |
 OnixRock / Ground | Main area | 57 | 5% | Both |
| BoldoreRock | Glacier Room Area | 54–56 | 35% | Both |
| DurantBug / Steel | Glacier Room Area | 54 | 20% | Both |
| NosepassRock | Glacier Room Area | 55–57 | 15% | Both |
| LaironSteel / Rock | Glacier Room Area | 55–57 | 15% | Both |
| WoobatPsychic / Flying | Glacier Room Area | 54 | 10% | Both |
| OnixRock / Ground | Glacier Room Area | 57 | 5% | Both |
| BoldoreRock | Iron Room Area | 54–56 | 35% | Both |
| DurantBug / Steel | Iron Room Area | 54 | 20% | Both |
| NosepassRock | Iron Room Area | 55–57 | 15% | Both |
| LaironSteel / Rock | Iron Room Area | 55–57 | 15% | Both |
| WoobatPsychic / Flying | Iron Room Area | 54 | 10% | Both |
| OnixRock / Ground | Iron Room Area | 57 | 5% | Both |
| BoldoreRock | Rocky Mountain Room Area | 54–56 | 35% | Both |
| DurantBug / Steel | Rocky Mountain Room Area | 54 | 20% | Both |
| NosepassRock | Rocky Mountain Room Area | 55–57 | 15% | Both |
| LaironSteel / Rock | Rocky Mountain Room Area | 55–57 | 15% | Both |
| WoobatPsychic / Flying | Rocky Mountain Room Area | 54 | 10% | Both |
| OnixRock / Ground | Rocky Mountain Room Area | 57 | 5% | Both |
Dust clouds 12
| Pokémon | Area | Level | Rate | Version |
|---|---|---|---|---|
 ExcadrillGround / Steel | Main area | 54–57 | 75% | Both |
| OnixRock / Ground | Main area | 54 | 20% | Both |
 SteelixSteel / Ground | Main area | 57 | 5% | Both |
| ExcadrillGround / Steel | Glacier Room Area | 54–57 | 75% | Both |
| OnixRock / Ground | Glacier Room Area | 54 | 20% | Both |
| SteelixSteel / Ground | Glacier Room Area | 57 | 5% | Both |
| ExcadrillGround / Steel | Iron Room Area | 54–57 | 75% | Both |
| OnixRock / Ground | Iron Room Area | 54 | 20% | Both |
| SteelixSteel / Ground | Iron Room Area | 57 | 5% | Both |
| ExcadrillGround / Steel | Rocky Mountain Room Area | 54–57 | 75% | Both |
| OnixRock / Ground | Rocky Mountain Room Area | 54 | 20% | Both |
| SteelixSteel / Ground | Rocky Mountain Room Area | 57 | 5% | Both |
FAQ
What Pokémon can you catch in Underground Ruins in Black 2 and White 2?
8 regional Pokédex species: Boldore, Durant, Nosepass, Lairon, Woobat, Onix, Excadrill, Steelix.
Sources & picture credits
Encounter tables come from PokéAPI’s Black 2 / White 2 records for the 301 regional Pokédex species (Pokémon outside the regional Pokédex are not listed). Location pictures © Nintendo / Game Freak / The Pokémon Company, archived from Pokémon Wiki (Fandom) file pages. Text is original retrogameindex writing.