Next to the ancient Roman castle of Zerzevan (southeastern Turkey) there are remains of a Roman water channel that supplied water to 54 cisterns.
The castle is located on a 124-meter rocky mountain. In ancient times, the top of the mountain was occupied by a Roman garrison, which controlled the entire valley and was an important defence point at the confrontation of the Romans and the Sassanids.
The facility was built in the 4th century CE and was used until the 7th century. It covered an area of 6 ha and was surrounded by a wall of 1,200 meters.
The nearest source of water was 8.5 km from the castle, thus bringing water from such a distant source, in such areas and in such a climate, to this day is a partial secret for scientists. The depth of the canal in some places was 1.5 m.
