Cant get past Sea floor R4

[Cpualex]

When entering Sea floor R4 it appears every entrance requires rock smash to move to the actual way to proceed though the game - which is in the top right corner, Now I've been going though every door in Sea floor cavern hoping to find another way without having rock smash as there is no way to obtain it in hoenn and have been unable to find another way.

[Travok]

When entering Sea floor R4 it appears every entrance requires rock smash to move to the actual way to proceed though the game - which is in the top right corner, Now I've been going though every door in Sea floor cavern hoping to find another way without having rock smash as there is no way to obtain it in hoenn and have been unable to find another way.

 

Hi, unfortunately you do need rock smash to proceed but it can be obtained in Hoenn. You get it from Mauville House 2 (highlighted in pic below) for 5k each, alternatively you can also get the pickaxe item from the coin store which acts as rock smash and allows you to smash rocks without having a pokemon that knows the move.