Fortified constructions of the Small Kirk-Kizkala monument (IV–III centuries B.C.) consist of differently shaped western and eastern parts that adjoin each other.
The Small Kirk-Kiz-kala frontier located not far from the Big Kirk-Kiz-kala monument was part of the defensive system constructed on the outskirts of the oasis. The garrison is likely to have used smoke signals to warn people of enemy invasions.
Some scientists believe that such frontiers as the Small Kirk-Kiz-kala also performed an additional function. They were used as a trade and exchange centre with nomads who roamed the northern territories of Khorezm. According to historical data, the monument was abandoned at the end of the III – beginning of the IV century A.D.