Desert Ruins Regirock .

In the games Pokémon Ruby, Sapphire & Emerald, after the player complete the puzzle at the Sealed Chamber,
the entrances to Desert Ruins, Island Cave and Ancient Tomb will become unsealed.
After entering the chamber, another puzzle will come between the player and the golem residing within.

In the games Pokémon Ruby & Sapphire, in order to gain access to the rear chamber, the player has to read the Braille on the wall,
Use the D-pad to go right twice, and go down twice, and finally have a Pokemon in the party use Strength (HM).
In the games Pokémon Emerald, in order to gain access to the rear chamber, the player has to read the Braille on the wall,
Use the D-pad to go left twice, and go down twice, and finally have a Pokemon in the party use Rock Smash (HM).