Its defenders are Nightmare forms: wins here drop Nightmare Shards and, rarely, a Nightmare Pokémon. See The Nightmare World.
Defenders
| Pokémon | Types | Level | |
|---|---|---|---|
| Nightmare Marshtomp | waterground | 204 | |
| Nightmare Quagsire | waterground | 205 | |
| Nightmare Whiscash | waterground | 206 | |
| Nightmare Stunky | poisondark | 207 | |
| Nightmare Crawdaunt | waterdark | 208 |
Play Nightmare Rock Tunnel now
Nearby maps in Nightmare Dusk
Nightmare Vermilion Harbor · Silencer Plateau · Nightmare Route 11 · Nightmare Route 10 · Nightmare Route 8 · Nightmare Celadon Pond