go to mount pryre.
Go to the top of Mt. Pyre summit and you will discover Maxie/Archie already took the Orb that was upon the summit. The elderly man will give you the Magma Emblem to open Team Magma's hideout.
Go to Jagged Pass and go in the middle where the Magma guy was. There is an earthquake and a door appears.
POKEMON EMERALD (What the Pokedream guide misses out (and everyone who has answered so far)): You get a Team Magma Emblem at Mt Pyre. You then go to the Mt Chimney Chair lift and take it up. Once on top, go down the Jagged Pass. As you go down, the Magma Emblem will open up a cave for you to go into. Complete this before you are able to go to Slateport to meet Captain Stern.
In Emerald, an old lady in Mt. Pyre will give you Magma Emblem. After you got it, go to Judged Pass. If you bring the Magma Emblem, the Magma Hideout will appear in Judged Pass.
go to mount pryre.
Go to the top of Mt. Pyre summit and you will discover Maxie/Archie already took the Orb that was upon the summit. The elderly man will give you the Magma Emblem to open Team Magma's hideout.
go to magma hide out
Go to Jagged Pass and go in the middle where the Magma guy was. There is an earthquake and a door appears.
If you are playing Pokemon Emerald, talk to the Old Lady at the top of Mt. Pyre and she'll give you the Magma Emblem. Take the Magma Emblem to Jagged Pass, south of Mt. Chimney, then find the door with the fire symbol on it. The Magma Emblem will activated the door and the entrance will open for you to go into Team Magma's Hideout.
To get to Mount Chimney, you have to go to Slateport, go into the water museum, defeat Team Aqua, go to Fallarbor town, defeat team Magma and get the magma emblem, go back to the cable car and go up.
POKEMON EMERALD (What the Pokedream guide misses out (and everyone who has answered so far)): You get a Team Magma Emblem at Mt Pyre. You then go to the Mt Chimney Chair lift and take it up. Once on top, go down the Jagged Pass. As you go down, the Magma Emblem will open up a cave for you to go into. Complete this before you are able to go to Slateport to meet Captain Stern.
In Emerald, an old lady in Mt. Pyre will give you Magma Emblem. After you got it, go to Judged Pass. If you bring the Magma Emblem, the Magma Hideout will appear in Judged Pass.
First go to mt pyre get the magma emblem then go up jagged pass on the acro bike. the floor will start to vibrate and the cve will appear
If you want to get to flanary in Pokemon emerald (beat team magma then they will disaper get the metorite and go down.
I had trouble with this too. You need to get the magma emblem from Mt. Pyre, then go to Mt. Chimney down the side, and a hole will open up. This is team magma's base. Infiltrate it then go back and the wailmer will be gone. Hope that helped!
Go to Mt. Pyre. Stop Team Aqua. A woman will give you the Magma Emblem. Go to the Jagged Pass. The floor will rumble and a door will open. Go there. That's Team Magma's hideout. Battle Maxie. Then go to Slateport. Team Aqua will steal the submarine. Then you can finally go to Team Aqua's hideout. (A master ball is there) And fight the executive. Then the Wailmers are finally gone.