Utumno (Dimension)

Utumno, also known as Udûn, was the first fortress of Melkor (later known as Morgoth), built many tens of thousands of years before the Third Age. It was delved deep within the earth in the far north of the world, being comprised of many dungeons, tunnels, and halls of ice, obsidian, and fire. In Utumno Melkor bred many evil and secret things, such as the first of the Orcs, Wargs, Trolls, and Spiders.

The Valar laid waste to Utumno after a great battle whereafter Melkor was chained and brought to Valinor. Yet the ruins of Utumno endured, and it is whispered that somewhere deep within the wastes of the Forodwaith lies a forgotten entrance to the Pits of the Underworld...

Entering Utumno
The journey to the entrance of Utumno is long and perilous, as one must travel a great distance through Forodwaith without any waypoints along the route. It is advised to bring many supplies (including food and some armour, preferably Warg fur) in order to survive the cold of Forodwaith as long as possible.

On the west side of the mountains of Forodwaith is a valley, and at the end of this valley is a large ruin: the entrance to Utumno.