Ephel Dúath, also known as the Outer Fence, were a range of mountains making up Mordor’s western and southern borders.


They met the Ash Mountains at the Black Gate, sealing Mordor from the outside. They housed the Morgul Vale, where the city of Minas Ithil stood. The Pass of Cirith Ungol bore secret access through the Ephel Dúath via the dangerous tunnels of Shelob. In the northern reaches of the mountains lay the castle of Durthang, above Udûn. Its southern half was penetrated by the river Poros, which is fed by the Sea of Núrnen.

To the far south-east of Mordor is the Ered Glamhoth, the tail of mountains that curves northwards off of the Ephel Duath.[1][2]


Ephel Dúath is Sindarin for 'Outer fences of dark shadow'.[3]


Foreign Language Translated name
Amharic ዐፕሀል ዹኣጥ
Arabic جبال الظل
Armenian Եպհել Դւատհ ?
Belarusian Cyrillic Епhел Дуатh
Bengali এফেল দুঅথ্
Bulgarian Cyrillic Епхел Дуатх
Chinese (Hong Kong) 伊菲爾杜斯 A.K.A. 黯影山脈
Georgian ეფელ დუათი
Greek Εφελ Ντουαθ
Gujarati એપેલ ડુથ
Hebrew אפל דואת
Hindi एफेल दुअथ्
Hungarian Árnyék-hegység A.K.A. Homály Kerítése
Japanese エフェル・ドゥーアス
Kannada ಎಫೆಲ್ ಡುವಾತ್
Kazakh Епһел Дұат (Cyrillic) Ephel Duat (Latin)
Kyrgyz Cyrillic Эпhэл Дуат
Macedonian Cyrillic Епхел Дуат
Marathi एपेल दुआथ
Mongolian Cyrillic Эпhэл Дуат
Nepalese एफेल दुअथ्
Pashto ېپهېل ضواته
Persian هپههل دواته
Russian Эфель Дуат
Sanskrit एफेल् डुअथ्
Serbian Епхел Дуат (Cyrillic) Ephel Duat (Latin)
Sinhalese ඒඵෙල් ඩුඅථ්
Tajik Cyrillic Епҳел Дуат
Tamil ஏப்ஹெல் டுஅத்ஹ்
Telugu ఏఫెల డుఅథ్
Ukrainian Cyrillic Епгел Дуат
Urdu ایپہال دواٹہ
Uzbek Епҳел Дуат (Cyrillic) Ephel Duat (Latin)
Yiddish ײפּהעל דואַטה

Mountain Ranges of Arda

Ash Mountains | Echoriath | Ephel Dúath | Ered Gorgoroth | Blue Mountains | Ered Lómin | Grey Mountains | Ered Wethrin | Iron Hills | Iron Mountains | Misty Mountains | Mountains of Angmar | Mountains of Mirkwood | Mountains of Mithrim | Orocarni | Pelóri | Wall of the Sun | White Mountains | Yellow Mountains


  1. The Lord of the Rings, The Return of the King, Book Six, Chapter II: "The Land of Shadow"
  2. The Atlas of Middle-earth, Regional Maps, "Mordor (and Adjacent Lands)"
  3. The Complete Guide to Middle-earth
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