use dive than dig and solve mistery ( wailord first then relicanth last)
Go to Lilycove City then head west soon you will see a building this is the safari zone a cool thing about it is you can find Pokemon you normally can't catch anywhere else also after beating the Pokemon league you can enter a secret area where you can catch Johto Pokemon.
talk to Archie in mt.pyre then you will be able to enter.
with an action replay or gameshark
You walk in.
In Pokémon Emerald, the secret code for the Lilycove Department Store is "12345". You can enter this code at the cashier in the store to receive a discount on certain items. Additionally, you can find other hidden codes in the game that can unlock various features and items.
You cannot get the codebreaker on Pokemon emerald you have to buy it its a thing you can plug into your GBA (GameBoy Advance) and enter in a code and there you go.
You get to the poison chamber by the safari zone. The statues say "To enter the POISON CHAMBER and the MASTER attack the NINJA must turn SOUTH and go BACK. You enter the chamber from behind the chamber. Turn south as in exit the chamber and go back as in enter the chamber from the back.
to enter the elite four
You press enter-enter means start. Backspace is select.
The sealed chamber is only reachable by diving in roue 134 (just West of Pacifidlog Town). Once traveled into the cave, you must use dig to enter the second chamber, which will unlock the caves to reach the three Regi Pokémon.
well... to know the cheat in Pokemon emerald just watch a you tube just type this, how to cheat in Pokemon emerald..now just enter ..ok
There is no hidden chamber on Cinnabar Island. There is a hole on top of Cinnabar Island, but you can only look at it. You cannot enter it to access any secret chamber.