Udûn

Fortified valley in Mordor behind the Morannon with tunnels, armouries, and forts on spurs. Part of the northern defenses.

Udûn stands as a formidable fortified valley in Mordor, forming the backbone of Sauron's northern defenses behind the dread Morannon. Nestled amid jagged spurs adorned with forts, armouries, and labyrinthine tunnels, it serves as an impregnable bastion safeguarding the Plateau of Gorgoroth. Though only detailed in the final volume, Udûn embodies the industrial might and strategic depth of Mordor's war machine, unbreached amid the cataclysmic fall of the Dark Lord.