Mirror Shard

A Mirror Shard is a piece of the Mirror of Twilight, which Zant broke so that Link could not reach the Twilight Realm. There are four of them for Link to find. One piece is located in the Mirror Chamber where he first learns of this predicament. One is "in the moutains", which is where the Snowpeak Ruins are; another is in a "hidden palace" which is actually the Temple of Time in the Sacred Grove. The last shard is "in the heavens" which is really the City in the Sky. Link must retrieve all three missing shards and head back to the Mirror Chamber to reassemble it. When the Mirror is repaired, Link is able to enter the Twilight Realm and confront Zant.