After beating the twin leaders in mossdeep gym you go to sotopolis city and do alot of things that team aqua leader asks you to do and volia! after you done these favors you can go inside the cave of orgin and find groudon!!!!
Kyogre can be found in the Cave of Origins in Sapphire and the Marine Cave in Emerald.
north of sootopolis city
The cave of Origins must rest in peace. (there's no way in)
You find Zuwa in the Moss cave in Doldogo. (forgot the name of the cave)
there is no key. you have to look for Wallace, and he's located by the cave of origins
you need seven badges to enter the cave. to do it, go to sootopolis city and talk to steven who will then lead you to the cave
Kyorge does not appear in Shoal Cave. In Pokemon Sapphire Kyogre appears in the Cave of Origins as part of the story. In Pokemon Emerald Kyogre appears in the Marine Cave after defeating the Elite Four.
Inside, the cave of origins, where you will see groudon.
It may be on the ground in the cave of origins, in Slaport city.
groudon but it is not in this game although it is in ruby in cave of origins
You need to find the submarine that team magma stole.
the cave of origins you need to battle 1000 Pokemon and10 Pokemon trainers