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Kozluk (Hazo) Castle is located in the Kale Mahallesi of the Kozluk district of Batman province.

The castle was built on a hill in the north of the district and dominates the region. There is no information or document about the exact date of the castle's construction. Today, a large part of the castle has been destroyed; A small part of it remained intact. Based on the ruins, it can be said that Hazo Castle consists of an inner castle. There is a cylindrical bastion to the southwest of the castle and the fortification walls to the west of the bastion. Smooth cut stone and crushed stone materials were used in these bastions and fortification walls. On the east, there is a second rectangular bastion and it is in a very destroyed and derelict condition. There is a cistern built by chipping the bedrock on the northeast side of the castle. There are a total of 4 rock tombs, one in the northwest and the other three in the east.