The Cave of Origin is in Sootopolis
use their Pokemon
you can use it in any cave to get out of the cave
Same place it is on sapphire
No there isn't. The cave is in Pokémon Emerald
Get the leg pokemon mewtwo
You can get in after you beat Archie at the route 128 cavern.
What cave?
Use dive while surfing and when you find a cave under water enter it and explore the cave and depending on which Pokemon version you have sapphire or ruby depends on which rare Pokemon youll find
The braille inside the cave says this: Run around the room. Stay close to the walls. Good Luck.
go get a life
You can get snorunt in shoal cave in ruby, sapphire and emerald version also Pokemon xd gale of darkness can get a shadow snorunt.
in that city, use surf into the water than in the cave at the center, u will need it.