Afeter that you try to deafeat team aqua(if you didnt deafeat them befor) or go on to the next gym.
they will be on the montain, once you have obtained the magma badge
there is no sub. only on Pokemon sapphiere and emerald. you have to defeat Team Magma, not Team Aqua.
defeat team magma & aqua and go to sotopolis go to the gym then the cave
when you defeat team magma. Go to the last city if you have there is a girl.wooooohoooo. well, enough of that. talk to her and ask where rayquaza is. this is only for EMERALD
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.
Defeat it's "Gym leader-twins" and then Team Magma will atack the Space Center
i don't know but i remember that you can access the Magma Cave/Hideout in order to battle Maxie / or even not. I think after you defeat Maxie, it is closed. But i Already Finished Pokemon Emerald..
First, you have to defeat the Aqua team at Mount Prye, then you have to defeat the Magma team at their hideout near Lavaridge. Then, the guard will be gone.
In order to enter the cave of origin in Pokémon Emerald, you need to first defeat Team Magma. You also need to have the HM dive.
You defeat both of them at Mt Pyre
There is no magma amulet in ruby. The location in which team magma's hideout is actually is the place where team aqua's hideout is in sapphire and emerald (i think you confused sapphire with emerald)
Team Aqua/Magma took it underwater. Dive a look around for a secret entrance underwater and go in it. You will see the submarine. Then one you are at the sub, go up to the surface above it and defeat team Aqua/Magma.