
Subleme
Mewtwo is at the back of the cave. You only need Pokemon with rock smash, strength, and surf so you will be able to get through to Mewtwo.
Added Apr 17 2008
ID: 249397
Current Rating:
Not Rated

cheating-is-good
Pokemon Green? Ah, a rare sight to see someone ask a question here anymore. It was only sold in Japan I hear, you are extremely lucky to own a copy of this game.
The legendary Pokemon that you can find in the Cerulean City Cave is the Psychic Pokemon Mewtwo. There is no map of the cave that I know of unfortunately so you will have to do what I did, trial and error. Go on a certain path, and if you find that it doesn't work, then choose another. Bring some repels though.
Hope this helps.
Added Apr 18 2008
ID: 249512
Current Rating:
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superkid243
OK you can only get Mewtwo but if you want the birds ask that in a different q&a.
There is no map...but there are a few ok Pokemon in there so try and try...
P.S. If you have any other game (red blue yellow) I'm pretty sure it's the same way.
Added Mar 1 2009
ID: 303363
Current Rating:
Not Rated