The Mountain Passage is a location from The Legend of Zelda: Phantom Hourglass. Found on Mercay Island, it is crawling with hostile creatures. The Mountain Passage is a dungeon-like structure containing three Small Keys that Link must collect to reach the other side of the island. Puzzles in the Mountain Passage include defeating enemies and pulling various levers. Also inside is a Treasure Chest that contains 20 Rupees.