Tarn Aeluin, also known simply as Aeluin, was the name given by the Grey-elves and the Edain to a small, clear lake located in the center of the highlands of eastern Dorthonion, at the entrance of the shallow pass leading to Ladros.[1]

It is said to have been hallowed by Melian the Maia. It was here that Barahir and his twelve comrades hid from Morgoth's forces after the Dagor Bragollach.[2]


Tarn Aeluin was Sindarin for 'Blue-mere'.[3]


Foreign Language Translated name
Bulgarian Cyrillic Тарн Аелуин
Chinese (Hong Kong) 艾露因
Georgian ტარნ აელუინი (Tarn Aeluin)

აელუინი (Aeluin)

Hebrew (Aeluin) איילואין
Russian Тарн Аэлуин

Lakes of Arda

Bywater Pool | Forbidden Pool | Gollum's lake | Great Lake | Kheled-zâram (Mirrormere) | Lake Evendim | Lake Helevorn | Lake Mithrim | Linaewen | Long Lake | Lórellin | Nen Hithoel | Nísinen | Tarn Aeluin


  1. The Atlas of Middle-earth, The First Age, The Elder Days, "Beleriand and the Lands to the North"
  2. The Complete Tolkien Companion
  3. The Complete Guide to Middle-earth
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