Go to Pallet Town and Surf down, and you will get to Cinnibar Island. You need to get the secret key from the pokemon mansion on Cinnibar Island to get into the gym.
After you beat the other 7 gym leaders fly too the city that has the forest and the gym leader is Giovanni (unexpected). Flying Pokemon and psycic Pokemon plus your starter Pokemon (charizard, venasaur, or blastoise) should do the trick. Good luck! ;)
You have to find the key in the abandoned mansion.
It's in Cinnabar island. It's where you get the key to open the Gym #7
its actually the 8th gym so you need 7 badges and then it will unlock
The 7th gym leader in Pokemon yellow is in Cinnebar Island, which is south of Pallet Town. You need a Pokemon with Surf to get there.
defeat the otheer 7 gyms he is the gym in pewter i think
It is the 8th gym....The last gym so just ignore until you beat the first 7
You need the secret key which is found in Pokemon mansion which is also on cinnibar island.
First surf down from pallet town then go into Pokemon mansion and get the secret key then go into the 7th gym and beat blaine.
She goes back to the Cerulean gym to be the Gym Leader
To get the 8th Gym Leader to return to his Gym in Viridian City, you must defeat all 7 other Gym Leaders.
Defeat the 8th