in the bottom of the Pokemon mansion
it is in the basement in the Pokemon mantion.
It is in the Pokemon House (in the basement), left of Cinnabar Island.
You will find it in the Pokemon mansion on cinnabar island.
you have to get a key in the Pokemon mansion
You must continue going to the far right of cinnabar while surfing into a cave, there you will have to search and then youl find a key there
no. 2
You have to find the key to the Cinnabar Gym there.
you have to find it inside the Pokemon mansion located on cinnabar island
the cinnabar key is in a poke ball that is in the Pokemon mansionin the last floor of cinnibar gym.
Find the secret key in the Pokemon Mansion,( Next to the gym)
You will find the key to the Gym of Cinnabar Island, From the Pokemon Mansion that is on the same island.
you go through it to find the key to the gym