Demon Angren (Orc. "Ongrog"). A fortress inside the Demon Cleft, said to be the abode of Indûr Dawndeath (one of the Nazgûl) in the early Third Age while they prepared for their master’s return, it was at the southern end of the Mithram Spur and overlooked the Plain of Núrn. It was destroyed by Elessar’s Army after Sauron’s overthrow.