Sealed Chamber

The Sealed Chamber is a location in Hoenn. It can be reached by diving on Route 134. It must be visited to unlock the caves that hold the three Regi Pokémon.

The chamber's history is shrouded in mystery. Not much is known about it though the translation of the braille in the second room is as follows:

In this cave we have lived.

We owe all to the Pokémon.

But, we sealed the Pokémon away.

We feared it.

Those with courage, those with hope.

Open the door. An eternal Pokémon awakes.

First comes Relicanth.

Last comes Wailord.

The last section refers to how the Desert Ruins, Island Cave and Ancient Tomb are unlocked. For an unknown reason, entering the second room with Relicanth at the top of your party and Wailord at the bottom of your party causes an earthquake to occur that opens the doors. Note that this is reversed in Pokémon Emerald.

The first room contains ten mounds of earth with braille. This just lists the alphabet. The braille on the door says to use Dig.

It is, however, believed by some fans that the eternal Pokémon is in fact the Wave Guiding Pokémon, Lucario. The reason for this is that the Braille description lends itself to an interpretation akin to the events in Pokémon: Lucario and the Mystery of Mew, in which the Regis have an important role.