there is no cheat to unlock it
Magma Cavern Pit is 23 floors Then there is a Magma Cavern Pit Magma Cavern Pit has 3 floors and the 3rd floor is Groudon
You will find him in Magma Cavern and Southern Cavern.
If you mean Groundon, then Groundon is in Magma Cavern, after passing 25 levels of magma cavern, and then 3 floors on magma cavern pit.
He's in Magma Cavern Pit 3F. (Magma cavern is 25 floors.)
Magma Cavern has 23 floors Magma Cavern Pit has 3 floors Groudon is found on the 3rd floor of the Magma Cavern pit glad to help...VERONICA
you have to beat mt freeze.
You get groudon on the third floor of magma cavern pit after completing 23 floors of magma cavern. You can unlock magma cavern after you complete your rescue team base and after all the rescue teams are gathered in Pokemon square to resue alakazam's team.
Well you do a few jobs until you go into magma cavern
You can get sandshrew or sandslash in magma cavern 1-6
Magma Cavern B3F. Trust me I saw and beat him.
Very carefully
keep doing rescue missions and then eventually u get to go into magma cavern.