The Big Kirk-Kiz-kala (IV–III centuries B.C. to III– IV centuries A.D.) is a sublime fortress located on the border of irrigated lands. It is part of a frontier chain situated east of the Ayaz-kala monument. The Fortress has double walls with a built-in two-storied archers» gallery and arrow-shaped crenels.
Today we can see the extant ruins of an agricultural farmstead or estate. Potsherds were found scattered in a vast area behind the walls. All of this indicates that there once was a large suburban complex. During the reign of the Afrigids the area within and outside the fortress walls was a centre of pottery production. The name Kirk-Kiz is translated as “Forty Girls.”