Rock Tunnel — Pokémon Gold & Silver
Every wild Pokémon here, by encounter method.
Rock Tunnel lists 8 Pokémon across 2 encounter methods (grass, grass), between level 8 and 16. 3 of them are on no other route's wild tables in this guide: Cubone, Marowak, Kangaskhan.
Rock Tunnel in other guides
The same area in other ROM hacks on this site. Each one has its own encounter table.
The original game's table for this area:
Pokémon CrystalPokémon FireRed & LeafGreenPokémon HeartGold & SoulSilverPokémon Red & BluePokémon Yellow