Remember on the third floor of the Cinnabar Mansion (also known as the Pokemon House), there are no walls in a certain area where a scientist is located, before the stairs that takes you to the 2nd floor? There are two empty spaces. The left one will take you to the locked area where there's a set of stairs to take you to the basement. The right one will take you back to an empty room.
Before reaching Cinnabar Island in Pokémon Red, you must first travel through the Pokémon Mansion on Route 21. You'll need to navigate through the mansion to find the key that unlocks the Cinnabar Gym. Additionally, you can access Cinnabar Island by surfing across the water from Route 19 or Route 20.
Top right of cinnabar island.
leave through the southernmost exit in hearthome city
Look for it.... Everyone else did
4, i think...pretty sure.
get the key
you walk through them XD
The secret key is in the Pokemon mansion (Cinnabar Island) in the basement.
Before reaching Cinnabar Island in Pokémon Red, you must first travel through the Pokémon Mansion on Route 21. You'll need to navigate through the mansion to find the key that unlocks the Cinnabar Gym. Additionally, you can access Cinnabar Island by surfing across the water from Route 19 or Route 20.
Top right of cinnabar island.
go in the cinnabar mansion. lolderp
on cinnabar island
You will find it in the Pokemon mansion on cinnabar island.
you have to find it inside the Pokemon mansion located on cinnabar island
you have to work your way through the Pokemon mansion and go out the right door while using the correct switches its and the very end of the Pokemon mansion
on Cinnabar Island.Pokemon mansion is on cinnabar island if you don't know how to get there go to pallet town then go south surfing on one of your Pokemon and there your at cinnabar island.
you have to get a key in the Pokemon mansion