Erôn-Durath; meaning "Castle of the Defenders" in elvish, was a castle built long ago by the Ravinian Empire.

The castle was destroyed in the terrible Battle of Harkalad.

The castle’s ruins lie along the Herthmar Road, in the present-day kingdom of Alveron, in a region known as the Amar Gap.

The fields and meadows around the ruins are known as the "Hallowed Fields".