Jesus Christ...U DO NOT GET THEM IN THE ALTERING CAVE!!! u find them roaming around Kanto after beating the the elite four. U get one according to the starter.
Charmander=Suicune
Squirtle=Raikou
Bulbasaur=Entei
I suggest using max repels. They are lv. 50, so put a Pokemon that is lv.50 or lower at the front of your team and look for them if they r in the same route as u. Of course put them to sleep they are runners (meaning they will run away from you right after making your move).
The hardest part is looking for them. If somehow u met him while looking through grass, the pokedex will register their picture and location. So check your pokedex often to see if u r in the same route as it.
(It was a pain finding them in gold, I sure it will be the same in Firered.)
Routes 13, 14, 15, Pokémon Mansion, Cerulean Cave, go to bulbapedia.com it has alot of info
shoal cave, but it is very rare
They can be found in the dark cave but they are rare.
go right from mahogany town and then go in to the cave and it will be icy it is (a bit) rare (i mean only a bit rare)
You have to get sandshrew in waywards cave but its also pretty rare to get him in there
Only zubats =)
you use a ultra ball
No, there are not any rare Pokémon located in Altering Cave. Some of the Pokémon that can be found in this location include Mareep, Pineco, and Shuckle.
What you do is either get them in emerald and trade [easy way] or waste about 50 minutes looking in that beaver dammed cave
Altering CaveIn Emerald, FireRed, and LeafGreen, Altering Cave appear useless for only having Zubat. If you go to a Nintendo Event with a Wireless Adapter attached, you'll get to catch rare Johto Pokemon.
It is the one place where you can find rare Pokemon.AnswerApparently, once you start using Mystery Gift/Event in Pokemon LeafGreen, rare Pokemon start appearing in Altering Cave. Pokemon such as Smeargle can be found there and nowhere else in the game. ---------------------------------------------------------------------------------------------If you have e-reader you can find some rare pokemons
You can catch Mew two (the person who wrote this is lying you have to go to currulean cave to catch mewtwo srry for getting your hopes up)
In Altering Cave all you find are Zubats. The only way to get rare Pokemon from it is to use mystery gift but I think the event has passed so at this point it is pretty useless.
The Altering Cave, in Pokemon FireRed/LeafGreen is pretty much useless until you get mystery gift. Before that the only Pokemon in there are Zubats from what I have seen. There may be others, however. Once you get mystery gift, though, some fairly good Pokemon can be found. These include Teddiursa and Stanler. They are not that rare, but they are better than Zubat.List of Pokémon in Altering Cave:ZubatMareepAipomPinecoShuckleTeddiursaHoundourStantlerSmeargle
you could get the pokemon squirtle,bulbasuar,andcharizard but they are hard to find i found them you have to hack the game to get them easily and other rare pokemons easily
Tynamo is a rare Pokemon found within Chargestone Cave.
I know that on pokemon blue there is a mewtwo in the cave at cerulean, as for leaf green or fire red I don't know but I would guess that there is a mew or some other sort of rare pokemon inside