Morgul Vale (Imlad Morgul in Sindarin), was the valley of the Morgulduin River in the western Mountains of Shadow. At its outflow into Ithilien stood the fortress of Minas Morgul ("Tower of Dark Sorcery"). The name was only used in the later Third Age, after the Nazgûl captured the fortress of Minas Ithil and turned it into the Tower of Dark Sorcery. The only vegetation to be found along the river was a white flower believed to give off noxious vapors. After Minas Morgul was cast down at the end of the Third Age, meadows of this plant died out and were seen never again.