Mountain Passage

The Mountain Passage is a location in Phantom Hourglass. Situated in Mercay Island, it is a small passage of two floors that is infested with basic enemies such as Red Chuchus, Keese, and Rats. It offers a few basic puzzles that Link will encounter throughout the rest of his journey, such as pulling levers in a certain order or obtaining Small Keys from monsters.

Link is required to go through the Mountain Passage at the beginning of the game to get to the other side of Mercay Island due to the bridge being broken. To get to the passage, Link must go through a small path west of Oshus's house. Once the young hero successfully clears the passage, he will exit right above the Mercay Tavern. Since the bridge eventually gets fixed, the Mountain Passage becomes unnecessary to access the east side of the island.

It is similar to the Tunnel to the Tower in Spirit Tracks.