In Pokemon Emerald, Team Magma's hideout is on the jagged pass, between Lavaridge town and Mt. Chimney. You can only get to it from Mt. Chimney, unless your have the acro bike. You must also have the Magma Embelem to access it, which is found at Mt. Pyre
by having strong Pokemon
Go through the jagged path and go through the cave opening u should be in team magmas base
he is hard use revive to your pokemon....................
you can catch one in team magmas hideout
near the cavern of team aqua! rout 128!
You go to mt chimny and then a rock will shak and resemble a hole and that's team magmas hideout . But I think you need a mechamp to get in.
all you have to do it use surf to continue north to the cave opening, go in and beat all the trainers, yata yata (note:this is also where you get the masterball)
Surf right from Lilycove after beating the team Magmas Base
You don't get it in Sapphire, only Ruby and Emerald
U have to go to mount pyre
you have to go to team magmas base and deafeat there leader in a battle.
just walk in front of the stone when you have there emblem