The Encyclopedia of Arda - an interactive guide to the world of J.R.R. Tolkien
Destroyed in the War of Wrath at the end of the First Age
The central regions of Beleriand, on the southwestern borders of Doriath
'Lakes of Twilight'
Other Names
That part of the Aelin-uial that consisted of marshland, rather than lakes, is referred to as the Fens of Sirion


About this entry:

  • Updated 11 September 2008
  • This entry is complete


The Twilit Meres of the River Sirion

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Map of Aelin-uial
The trackless fens of Aelin-uial

The maze of lakes and fens formed where the River Aros met the Sirion, before it fell beneath the Andram. These were lands heavy with enchantment, both from the Girdle of Melian guarding Doriath to the north, but also from the power of Ulmo that was strong in Sirion's waters. It was here that Turgon and Finrod were given the idea of building their hidden strongholds at Gondolin and Nargothrond; an idea placed in their dreams by Ulmo.

The Aelin-uial was under the control of the Sindarin Kingdom of Doriath. Thingol's marchwardens maintained secret ferries among the reeds, so that they could cross between Sirion's easten and western banks unregarded, if need be.

At the southern end of the Aelin-uial, Sirion's waters collected together once more from the many paths they took through the marshland and, at the place called the Falls of Sirion, fell in a thundering torrent down into the earth.

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