Gym Four is in Celadon City. Go right from Lavender town. Erika is the Gym Leader, and she trains Grass Pokemon.
beat the 4 gym beat the 4 gym
if u battled him in the gym do the elite 4
You get it as a prize for defeating Sabrina, the Saffron gym leader.
Please rephrase your question. If mean the cave with no gym, then you have to beat the Elite 4 and get Bill's Gems.
there is no gym leader in lavender town
no
the thunder gym in in vermillion city
You have to beat the 2nd gym.
go to the celadon city gym
In the cinnibar island gym.
beat the gym leader
NO,but the map,the gym is the same as Pokemon firered.