It is located right next to Leblebikiran Dungeons, which is located between Mardin Door and New Door. It is written in its tablets that it was built with the command of, son of Seljuks Ruler Alparslan, Ebu’l Feth Meliksah by Architect Selameoglu Muhammed. It is said that it has taken its name due to its circular form which takes very little place. There is a tablet on the dungeon.