Stone Tower Temple
The final dungeon in The Legend of Zelda: Majora's Mask, is also Link's fourth stop on his quest to retrieve the four boss masks. It is only accessible after learning the Elegy of Emptiness, which creates creepy little statues of himself that can be used as Hookshot targets.
Stone Tower Temple actually requires Link to use each of his transformations to solve puzzles, with the environments varying from room to room. Midway through the dungeon he finds the Mirror Shield, a special light-deflecting shield that can be used to deflect beams of light to destroy the sun icons and blocks scattered throughout the temple.
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