Skull Dungeon

In 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. The end boss is Mothula. After defeating him you receive a Heart Container and the 3rd Crystal.

Access to the dungeon is granted by walking into the Skull Woods. You will find some skulls with their mouths open and holes, these all give access to different parts of the Palace

In Oracles 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 when you fix the Village in the past. In order to do that, you need to set the Tuni Nut in the middle of town. Once that is done, the village is fixed 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 main boss is Eyesoar. The item you need to collect from the dungeon is the Essence of Time, the Burning Flame