Ancient Tomb Registeel .

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 order to gain access to the rear chamber, the player has to read the Braille on the wall,
then proceed to the center of the room and have a Pokemon in the party use Flash ^RS / Fly ^E (HM).