Overlook Island
Overlook Island is located at G1. It has a Secret Cave, a Blue Chuchu, and a sunken treasure.
Secret Cave
There is a combat cave that can be accessed by using the Hookshot to grab the trees located on top of the island's structures. The cave can also be accessed using chest storage from another island. The cave contains six rooms; five of them contain enemies, and the final room will be unlocked when all of the enemies are defeated. The final room contains pots with large amounts of rupees and a chest that will spawn when the player plays Wind's Requiem on the wind logo on the floor. The chest contains a Triforce Chart in the vanilla game.
Sunken Treasure
The sunken treasure can be accessed by Treasure Chart 13 when charts are not randomized. The chest contains the Secret Cave Chart in the vanilla game.