Skull Dungeon

A Link to the Past
The Skull Woods Palace is the third dungeon in the Dark World in A Link to the Past.

It is located in the north-west, in the area also known as the Skull Woods. The main treasure is the Fire Rod, and the end boss is Mothula. After defeating him you receive a Heart Container and the third crystal.

This dungeon is interesting because instead of a single main entrance, the Skull Woods contain multiple entrances to the dungeon. Entrance is gained by various holes and pitfalls throughout, and the final entrance to the boss is gained by a huge, ugly skull head where the Master Sword used to be. This makes it unique among the dungeons so far featured in the Zelda series.

Oracle of Ages
The Skull Dungeon is Level 4 within Oracle of Ages. It is located in the present day Symmetry Village, but can only be accessed after restoring the village in the past. In order to do that, Link would need to take the broken Tuni Nut to Patch to have it repaired, then return it to its pedestal inside the village's central building. Once that is done, the village will be restored in the present and the dungeon is opened.

The main item within the dungeon is the Switch Hook, an item that allows Link to switch places with certain items and enemies. The mini-boss is the Armos Warrior, and the main boss is Eyesoar. After clearing the dungeon, Link will recieve another Heart Container and the fourth Essence of Time, the Burning Flame.