Lost at Sea Station

In Spirit Tracks, Lost at Sea Station is located in the southeast corner of the Ocean Realm. There is a hidden cave that must be bombed to be revealed atop a cliff; within it, there is nothing but a Gossip Stone. When it is activated with the Song of Awakening, it will reveal that the cave is actually a replica of a temple in a distant land, presumably the Temple of the Ocean King from Phantom Hourglass. If Link agrees, he will enter the temple, where he will be unable to use his sword or bow. Within the temple, Link will encounter all four types of Phantoms while he completes the challenges on every floor. When he completes the temple, he is rewarded with a treasure.