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it is in the basement in the Pokemon mantion.
With the secret key.
There is a basement lab with a bunch of scientist and wild ditto, there is an item ball with the key in it.
You must fight your way through Pokemon mantion, the top left building of the island. The key is at the end of the possible path, good luck.
Find the secret key in the Pokemon Mansion,( Next to the gym)
You need the secret key found in Pokemon mansion.
The Secret Key in Pokemon Red unlocks the door of the Cinnabar Gym. The Secret Key can be found in the basement of Pokemon Mansion.
You can only get the secret key in Pokemon Platinum
the secret key is in the Pokemon mansion - Celadon city basement
The Secret Key that you get in the Pokemon Mansion is used to enter the Cinnabar Gym.
The secret key is in the Pokemon mansion (Cinnabar Island) in the basement.
No it is not