Uncharted Island

Uncharted Island is an island found in The Legend of Zelda: Phantom Hourglass.

Located close to the Isle of Gust is an island without a map. This is simply referred to as Uncharted Island. However, if you go around the island slowly drawing it's shape on the map, you will find it's shaped a lot like a spouting whale - it is perhaps connected to Oshus, for two reasons - his true form is a Blue Whale and he is the only human besides Link and Linebeck to have ever set foot there. When you solve a riddle that a statue out front of a cave gives you (It steers with rudder, then makes spray, moves with paddle then sees a way), you can enter the cave - inside is the Golden Chief of Frogs. He tells you how he is friends with Oshus (who brought him to the island) and gives you the Cyclone Slate.