2 stories deep
You can find Mewtwo in the back of Cerulean Cave.
In either the dark cave or the cave leading to azelia town, I don't remember, but you have to go deep into one of them and get the rarest water Pokemon (except for lugia) its Lapras.
Find it in the deep Shoal Cave o nroute 125
About 10 or 11 floors.
deep heat cave 8f :)
i think it was somewhere deep in that cave west of Oreburg city...
There is a cave called the Ice Cave north of Mossdeep. You have to surf to get to it, but deep inside, there is a chance to find delibird. Hope this helps.
you run along the walls until you find gible, or if its not the secret entrance, you go deep into the cave and find gible
On Pokemon pearl you can only use it battle or you can use it in a cave if are in deep in the cave once you can use the HM FLY outside of battle.
you go to mossdeep city and look for a cave with to girles when you go deep in the cave you will see some ice and just walk around you go to mossdeep city and look for a cave with to girles when you go deep in the cave you will see some ice and just walk around
Pretty far. Bring lots of Max Repels and go on Bulbapedia and look up the map of Cerulean Cave
while surfing you will find deep areas to dive and once you dive you will have to search for a cave and in the cave once you travel through there will be groudon waiting for you