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The Isenmouthe or Carach Angren was a pass located in the northwestern portion of Mordor, which guarded the southern end of Udûn.

The Isenmouthe lay between where the Ephel Dúath and the Ash Mountains mountain ranges met and was a narrow passage. The pass was heavily guarded with Fortresses and watchtowers overlooking it. There was also a wall of earth built across the passage and a large ditch dug across the entrance spanned only by a single bridge.[1][2]


Isenmouthe is a Sindarin word Carach Angren both mean Iron Jaws.[citation needed]

See Also


Foreign Language Translated name
Danish Isenmunde (Carach Angren)
Dutch Isenmonde
Finnish Rautakita
German Isenmünde
Hebrew אייזנמאות
Hungarian Vasgádoros
Japanese アイゼン口
Norwegian Isenmunn
Russian Изенмоут
Spanish Garganta de Hierro
Swedish Isengapet
Turkish İsen Ağzı
Ukrainian Cyrillic Айзенмаутом


  1. The Atlas of Middle-earth, Regional Maps, "Mordor (and Adjacent Lands)"
  2. The Lord of the Rings, The Return of the King, Book Six, Chapter III: "Mount Doom"