Tol Súlereb or Tol Buruth was the largest island on the Rhûnaer. It was knows to the indigenous Sea-Easterlings as Egil Dorn. The Island was known as a source of evil to the Free peoples, it was home to a temple of the Dark Worship which was guarded by fallen Shapeshifters and regarded by some as the secret source of the Shapeshifter-disease.