Things You'll Need
Instructions
Travel to the town of Pacifidlog in "Sapphire" and walk to the western shore.
Use the Surf ability and sail west in the water until you reach a current that carries you automatically. Eventually the current takes you to an island. Cross the island and walk to the middle-west edge of it and then surf again until you reach a dive spot.
Use Dive and go under the water. Swim along the tunnel to the south and emerge when you reach an engraved slab of rock. You will come up in a room lined with Braille tablets.
Walk to the tablet farthest back and use the Dig ability in front of it to burrow underground and come up into the Sealed Chamber, or cave.