Kelethin
Kelethin is the wood elf city built in the treetops of Greater Faydark, home to the Ranger guild Faydark's Champions and the Emerald Warriors warrior guild.

Overview
Drawn from The History of Feir'Dal (House Item) — in-game book.EQ2Primary · mirrored · best available source
Through my own experiences, I have gained knowledge and insight into the Feir'Dal. Each part of this history tome can only be completed in its own time.
Story 1
Our mother is Tunare, goddess of nature. One day, she walked alone in the woods and an oak leaf fluttered to the ground before her, so that she need not walk in the mud. She picked it up and breathed upon it, creating the Feir'Dal. The Feir'Dal are most at home surrounded by greenery. Long ago, we lived on Faydwer, in our city of Kelethin among the trees.
The woods of the the Faydark spread as wide to us as any sea and as bountiful. All we could want or need was available in the trees, from food to shelter to weapons and shields. Stories tell of first day of the Growth season, when the Feir'Dal bards would position themselves among the branches and sing songs of blessing and thanks to Tunare. For those below, it was as though the trees themselves were singing.
From the trees first saw the smoke of the first fires in the War of Fay. The twisted Teir'Dal and their minions thought of us as mere inconveniences between them and the Koada'Dal. They thought to march through Faydark to Felwithe.
Our resistance was strong and yet, we had not faced an enemy like this before. The Teir'Dal pushed their minions to death and when one fell, another came from behind in its place. They fought without honor. They cast us aside, burning our homes and mocking our sorrow.
We stood with the Koada'Dal before Felwithe, those who were not still locked in skirmishes throughout Faydark. It filled our hearts with such sadness to look beyond one battlefield to see our homes burning beyond.
Overview
No EQ1 source leads this topic — its EQ1 accounts are listed below.
Further sources
3Lore that mentions this in passing.