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[[Category:Sindarin Locations]]
[[Category:Sindarin locations]]

Revision as of 17:59, 13 June 2012

Physical Description
LocationMeeting of Aros and Sirion
DescriptionMarshy mazes of creeks and lakes
General Information
Other namesMeres of Twilight; Umboth Muilin (Pools of Twilight)
EventsDreams of Turgon and Finrod

Aelin-uial, or the Meres of Twilight, was a marshy confluence of the river Aros into Sirion, south of Doriath.


The Aelin-uial was the maze of lakes and fens formed where the river Aros met the Sirion, before it fell beneath the Andram.[1] These were lands heavy with enchantment from the Girdle of Melian guarding Doriath to the north of the Aelin-uial, and also from the power of Ulmo the Vala, which was very strong in this area.[2]

The Aelin-uial was under the control of Doriath. Thingol's Marchwardens kept secret ferries among the reeds, which they could use to cross in between Sirion's eastern and western banks unseen by anyone.[3] At the southernmost end of the Aelin-uial, the waters of Sirion met once more at the Falls of Sirion.[1]

It was here that Turgon and Finrod were given the idea of building their hidden strongholds located at Gondolin and Nargothrond, which was an idea put into their dreams by Ulmo.[4] It was also in the meres that the Elves who guarded the western marches of Doriath found Húrin, whom they then brought before King Thingol.[5]


Aelin-uial is a Sindarin name, composed of aelin "lake" + uial "twilight".

A variant name used by Tolkien was Umboth Muilin (also spelt Umboth-muilin and Umboth-Muilin), which translates to "Pools of Twilight".[6] Helge Fauskanger has noted that the Noldorin name Oelinuial ("Pools of Twilight"; variant forms Elinuial and Eilinuial[7]), of the Etymologies, became Aelin-uial in the published Silmarillion.[8]

Yet another, early form, was the Gnomish name Hithliniath ("Pools of Mist"; which was amended to Umboth Muilin, itself amended to Aelinuial).[9]


  1. 1.0 1.1 J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Map of Beleriand and the Lands to the North"
  2. J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of Beleriand and its Realms"
  3. J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of Túrin Turambar"
  4. J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Return of the Noldor"
  5. J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Ruin of Doriath"
  6. J.R.R. Tolkien, Christopher Tolkien (ed.), The History of Middle-earth Index, pp. 451-2
  7. David Salo, "AE and OE (message 2028)" at Elfling
  8. Helge Fauskanger, "Index to the Etymologies - Explanation" at Ardalambion (accessed 18 September 2011)
  9. J.R.R. Tolkien, Christopher Tolkien (ed.), The War of the Jewels, "Part Two. The Later Quenta Silmarillion: Of Beleriand its Realms (Chapter 11)", p. 194 (§111)