Rock Spire Isle
Rock Spire Isle is a collection of connected rock spires at B-3 that contains a Secret Cave, Beedle's Special Shop Ship, an Overworld Check, and sunken treasure.
Secret Cave
The secret cave can be accessed by using bombs to destroy the boulders on top of the rock spires to create a path that the player can jump across. Bombs can be skipped by getting chest storage from another island and climbing over the boulders.
Once the player enters the cave, they will need to light all of the torches using the provided Boko Sticks or Fire Arrows. Once that is completed, the player will be attacked by lots of Keese. Once they have been defeated, a chest will spawn with contains a Treasure Chart in the vanilla game.
Overworld Check
The southern Gunboat in this quadrant will reveal a sunken treasure spot when destroyed with bombs. This treasure contains a Piece of Heart in the vanilla game.
Beedle's Special Shop Ship
(Main article: Beedle's Special Shop Ship)
Sunken Treasure
The sunken treasure can be found by opening Treasure Chart 2 when charts are not randomized. This treasure contains a Piece of Heart in the vanilla game.