you got to beat the team magma (aqua if in sapphire) at the mountain near lillycove city first. :]
Pokemon Ruby in the Cave of Origin after getting your seventh badge. AT THE UNDER WATER CAVE A.K.A.TEAM MAGMAS HIDEOUT
in the cave of orgin
we don't get groudon in Pokemon sapphire. we get it in only ruby and emerald
First you must defeat team magma at an underwater cave near the island where Ever Grand city is located.
The only way to get one would be to trade it from Ruby or Emerald.
in Pokemon sapphire you have to trade. in Pokemon ruby you have to make groudon come to the cave of orgin by defeating team magma or whatever in sea floor cabin.
by going to um i think on of the houses in lilcove city
hm7 waterfall is in the cave of orgin, sootopolis city, you have to go to the magma lair otherwise they won't let you in
A master ball can catch any wild pokemon.
In emerald find out in ruby orgin cave.
Groudon, is found in Sootpools city. After you defeat team Magma(Or is it Aqua...)
I think you have to transfur from ruby version or something, I havent done it yet.