After you get the Power Plant up and running, go to a guy with brown clothes on in the Kanto Radio Tower and he will amp up your pokegear. Go to the Snorlax blocking your way into the Diglett's Cave and turn on the pokegear. Go to the music section and put the beacon up until it says Poke Flute. Then talk to Snorlax.
Chat with our AI personalities
beat the power plant and then beat snorlax go through digletts cave beat gyms go to pallet town then surf in an instant your there
cliff cave is right next to cianwood city through the cave
in cerulean cave
Cerulean Cave
You find it in Union Cave.