Mt. Boulder Gym
Gym Castro Valley
Location Mt. Boulder Caves
Gym Leader Giovanni/Silver/Ronan
Badge Star Badge
Dominant Type Ground (Giovanni and Ronan)/Various (Silver)
Region Rijon

The Mt. Boulder Gym is a Pokémon Gym located in Mt. Boulder Caves. In Pokémon Brown, Giovanni is the leader. In Pokémon Prism, the leader is Silver, and in Rijon Adventures, its leader is Ronan.


RijonAdv - Mt. Boulder Caves Gym

Pokémon BrownEdit

Rijon AdventuresEdit

Rijon Adventures
Trainer Pokémon
Ace Trainer Yuji
Reward: PokémonDollar2016
Sandslash Lv. 56
No item
Graveler Lv. 56
No item
Onix Lv. 56
No item
Graveler Lv. 55
No item
Marowak Lv. 56
No item
Black Belt Atsushi
Reward: PokémonDollar1344
Hariyama Lv. 56
No item
Medicham Lv. 56
No item
Guitarist Dougg
Reward: PokémonDollar1920
Electabuzz Lv. 60
No item
Crush Girl Izumi
Reward: PokémonDollar900
Hariyama Lv. 60
No item
Tamer Cole
Reward: PokémonDollar2320
Seviper Lv. 57
No item
Tauros Lv. 58
No item
Ace Trainer Cole
Reward: PokémonDollar2016
Sandslash Lv. 54
No item
Rhyhorn Lv. 55
No item
Nidoking Lv. 56
No item
Nidorino Lv. 56
No item
Sandslash Lv. 54
No item
Black Belt Tanaka
Reward: PokémonDollar1392
Hitmontop Lv. 55
No item
Hariyama Lv. 55
No item
Hitmonchan Lv. 58
No item
Ace Trainer Lilah
Reward: PokémonDollar2232
Nidoqueen Lv. 55
No item
Aggron Lv. 62
No item

Mt. Boulder Caves
Reward:PokémonDollar 6600
TM026 (Earthquake)
RijonAdv - Ronan Sprite
RA - Team5
Slaking Lvl 63
Aggron Lvl 64
Metal Coat
Encore Facade Iron Defence Earthquake
Focus Punch Eartquake Rock Blast Fissue
Tyranitar Lvl 65
Black Glasses
Steelix Lvl 64
Metal Coat
Dragon Dance Thunderbolt

Fire Blast

Crunch Earthquake Dragon Breath Earthquake
Salamence Lvl 66
Sitrus Berry
Crunch Substitute
Fire Blast Earthquake


Rijon Gyms
Marine Badge Hail Badge Sprout Badge Spark Badge Fist Badge Psi Badge White Badge Star Badge
Seashore GymMerson GymOwsauri GymMoraga Gym
Jaeru GymCastro GymEquality River GymMt. Boulder Gym

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