The Gnarled Key is a quest item from The Legend of Zelda: Oracle of Seasons. After Link obtains the Wooden Sword from the Hero's Cave, he can open the gate to the Maku Tree's grove. Upon sending Link on his quest to retrieve the eight Essences of Nature, the Maku Tree gives him the Gnarled Key. The key is used to enter the Gnarled Root Dungeon, the first dungeon in the game.