Norcia (Italian pronunciation: [ˈnɔrtʃa]), traditionally known in English by its Latin name of Nursia /ˈnɜːrsiə/, is a town and commune in the province of Perugia (Italy) in southeastern Umbria. Unlike many ancient towns, it is located in a wide plain abutting the Monti Sibillini, a subrange of the Apennines with some of its highest peaks, near the Sordo River, a small stream that eventually flows into the Nera. The town is popularly associated with the Valnerina (the valley of that river).