Walkthrough
Rock Tunnel is found in the middle of Route 10, being a very dark cave that cannot be navigated through without HM Flash. As you work your way through the ladder system of Rock Tunnel, loads of Pokemon Trainers and Wild Pokemon can be found. Lavender Town waits just beyond Rock Tunnel and the southern side of Route 10.
Rock Slide: Can be Found Near The End Of Rock Tunnel
Wild Pokemon
1st Floor:
Geodude (35%): Levels 15-17
Zubat (30%): Levels 15-16
Mankey (15%): Levels 16-17
Machop (15%): Levels 16-17
Onix (5%): Levels 13-15
Basement Floor 1:
Geodude (35%): Levels 15-17
Zubat (30%): Levels 15-16
Mankey (15%): Levels 16-17
Machop (10%): Levels 17
Onix (10%): Levels 13-17
Geodude (95%): Levels 5-30
Graveler (5%): Levels 25-40
Pokemon Trainers
First Floor:
Hiker Lenny: Level 19 Geodude, Level 19 Machop, Level 19 Geodude, Level 19 Geodude
Hiker Oliver: Level 20 Onix, Level 20 Onix, Level 20 Geodude
Hiker Lucas: Level 21 Geodude, Level 21 Graveler
Picnicker Leah: Level 22 Bellsprout, Level 22 Clefairy
Picnicker Ariana: Level 19 Pidgey, Level 19 Rattata, Level 19 Rattata, Level 19 Bellsprout
Picnicker Dana: Level 20 Meowth, Level 20 Oddish, Level 20 Pidgey
Basement Floor 1:
PokeManiac Ashton: Level 23 Cubone, Level 23 Slowpoke
PokeManiac Winston: Level 25 Slowpoke
Picnicker Marth: Level 22 Oddish, Level 22 Bulbasaur
PokeManiac Steve: Level 22 Charmander, Level 22 Cubone
Hiker Allen: Level 25 Geodude
Hiker Eric: Level 20 Machop, Level 20 Onix
Picnicker Sofia: Level 21 Jigglypuff, Level 21 Pidgey, Level 21 Meowth
Hiker Dudley: Level 21 Geodude, Level 21 Geodude, Level 21 Graveler
PokeManiac Cooper: Level 20 Slowpoke, Level 20 Slowpoke, Level 20 Slowpoke
Items
Repel: On Ground
Escape Rope: On Ground
Pearl: On Ground