Mt. Izla (Syriac: ܛܘܪܐ ܕܐܝܙܠܐ Turo d'Izlo), also Mountain of Nisibis, or briefly in the 9th century, Mt. Kashyari, is a low mountain or ridge near Nisibis in what once was Sassanid Persia, but is now southeastern Turkey, along the border with Syria. The ridge is the location of dozens of ancient monasteries which were built in the early centuries of Christianity.