From WoWWiki

Ethel Rethor is a night elven ruin in the far northwest of Desolace. Most of the ruins are located under-water with the exception of a lone tower with a small bridge leading to an un-openable entrance. In the shadow of the tower, to the immediate north, there is a representative of the Argent Dawn named Azore Aldamort.

As with many other coastal elven ruins this one is also inhabited by naga, though they seem to avoid the tower entirely.

Subzones of Desolace

Bolgan's Hole • Ethel Rethor • Gelkis Village • Ghost Walker Post • Kodo Graveyard • Kolkar Village • Kormek's Hut • Magram Village • Mannoroc Coven • Nijel's Point • Opal Ridge • Ranazjar Isle • Realm of the Harpies • Sar'theris Strand • Sargeron • Scrabblescrew's Camp • Shadowbreak Ravine • Shadowprey Village • Spearhold • Tethris Aran • Thunder Axe Fortress • Valley of Bones • Valley of Spears • The Veiled Sea