The Encyclopedia of Arda - an interactive guide to the world of J.R.R. Tolkien
Behind the Morannon, the Black Gate at the northwestern entrance to Mordor
Guarded to the northwest by the Towers of the Teeth, and to the southeast by Carach Angren
Named for the original Udûn, Melkor's great fortress in the distant past of the World; the name originally meant something like 'dark pit'


About this entry:

  • Updated 17 July 2010
  • Updates planned: 1


The valley behind the Gates of Mordor

Map of Udûn

The deep valley in the northwest of Mordor, formed at the meeting of the Ered Lithui and the Ephel Dúath, whose northern entrance was guarded by the Morannon.

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