Tur Abdin

Tur Abdin is a hilly region situated in southeast Turkey, including the eastern half of the Mardin Province, and Şırnak Province west of the Tigris, on the border with Syria and famed since Late Antiquity for its Christian monasteries on the border of the Roman Empire and the Sasanian Empire. The area is a low plateau in the Anti-Taurus Mountains stretching from Mardin in the west to the Tigris in the east and delimited by the Mesopotamian plains to the south. The Tur Abdin is populated by more than 80 villages and nearly 70 monastery buildings and was mostly Syriac Orthodox until the early 20th century. The earliest surviving Christian buildings date from the 6th century.
In Late Antiquity, the area was part of the Roman Empire's province of Mesopotamia and an important centre of Roman Christianity, called in Latin: Mons Masius or Izla. The Tur Abdin was fortified by the emperor Constantius II , who constructed the fortress of Rhabdion to defend it during the Roman–Persian Wars. After the failure of Julian's Persian War in 363, the Tur Abdin became part of the Sasanian Empire along with the remaining territory of the five Transtigritine provinces and the nearby strongholds of Nisibis and Bezabde. The numerous monasteries of the Tur Adin eventually became part of the Church of the East organized at the Council of Seleucia-Ctesiphon in 410. They mainly took the Miaphysite position of non-Chalcedonian Christianity after the Council of Chalcedon of 451. After a period of persecution by the Chalcedonian state church of the Roman Empire and during the Byzantine–Sasanian War of 602–628, the monasteries of the Tur Abdin enjoyed a particular prosperity under Arab rule in the latter 7th century.

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