You have to go to this Island I think it is called Seafoam Islands and when you get there take the ladder.
seafoam islands; 15th gym
In the gym!
in his gym
no
The fourth gym leader in Pokemon Soul Silver is in Ecruteak City.
Gary isnt a gym leader
go to the Pokemon gym
The ice gym leader
Go in Violet City and into the gym.
move to the 8th gym
He is on Cinnabarr Island.
fail...