you need to have the red orb and you need to have beaten the 8th gym leader, THEN you can have your very own groudon.
Find the submarine Team Magma stole and defeat themand awaken Groudon
go to dewford and go in the cave the man in there has it
In Pokemon emerald/Ruby/Sapphire,go to Dewford Town and go to the Cave and ask the man that istanding there and he'll give it to you.
After you beat the elite four, you go to the weather institute and talk to the man on the second floor. He will tell you where you can find kyogre and after you catch him go back to the weather institute and talk to that same man this time he will tell you where groudon is.
By touching his private parts and licking it:)
What you have to do is go to route 221 and theres this house somwhere there go in save turn off and put your ruby in your ds and have groudon in your party then turn diamond on and go to the man and he will let you in to this place and look for groudon then catch it ta dar but there will be no groudon in ruby and you cant give it back
Find the submarine Team Magma stole and defeat themand awaken Groudon
you cant catch a man in Pokemon ruby
You don't get to go in there until team magma release Groudon. at which point you get let in by the old man and Steven.
you've got to find kyogre and groudon, stop team magma and aqua from doing what ever to them then go to the cave that the old man is blocking in sootopolis city and you can go in
Pokemon is AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i think you need to talk to him to see where the drought is because if you dont it wont be there but you could try it would be a lot harder
you have to get the ruby and Sapphire rock
You catch Groudon in the Cave of Origin in Sootopolis. There will be a man blocking the entrance. First, however you must defeat Team Magma and foil their plans until the leader, Maxie, uses the blue orb and Groudon awakens and goes out of control. Then, Steven and Team Aqua leader Archie should appear. Steven says he will be in Sootopolis. I suggest that training your pokemon and healing them at the PC is a good idea first. (Groudon I think is level 45.) The man blocking the entrance has stepped aside. Wallace and Steven are there. Once Wallace or the man ( I can't remember) sees you have the Red Orb, They let you in. NOTE: I suggest that you use Ultra balls or a Master Ball. But if you haven't caught all the Regis yet, you might want to save your Master Ball if you don't want to struggle with them. you will only need to inflict a bit of damage for the Regis. If on the computer playing Ruby,(like me,) then I suggest you save before your battle with Groudon, after you inflicted a bit of damage, when seeing if you can weaken Groudon some more,(just in case you make him faint,) and just before you throw an Ultra or Master Ball. I kind of forgot this is only the where to catch Groudon question, but I hope this helps anyway!
Groudon is located in the Terra Cave which could be in quite a few locations; it moves around sometimes. Groudon's cave can only be accessed after the fight between Groudon and Kyogre is ended in Sootopolis City. Even though you may not konw the cave's location, the man in the weather institute will tell you where droughts are occuring, and that is where the cave and Groudon are.
Train your Pokemon better, or use an action replay,man.
Under the desk!