The Victory Road caves are always different in different versions. Some other caves are changed, too.
Mewtwo
digglette cave
in the yellow area
No. Mewtwo is.
in the cerulean cave but it's rare
hollow cave
you find him in Pokemon yellow red and blue in the cave by cruelean city you have to be champion to get in the cave iam a spambottttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
... Cerulean City, the cave on the other side of the water.
you can find chansy in the mewtwo cave.
Cerulean Cave, outside Cerulean City
use strength
Go to Vermilion city. After that go to the east and you will see digglet's cave. You can get to digglet's cave only in Pokemon Red, Pokemon Blue, Pokemon Yellow, Pokemon Gold ans Silver , Pokemon Crystal , Pokemon Fire Red ans Pokemon Leaf Green,