Turtle Lake (cargo ტბ ტბა, Kus tba) is a small lake located three kilometers southwest of Tbilisi on the northern slope of Mtatsminda Mountain. The name of the lake came from the abundance of turtles, which used to live in these places. The lake is fed by a small river Varaziskhevi (the tributary of the Kura), the catchment area is 0.4 km². The lake is located at an altitude of 686.7 m above sea level, its area is 0.034 km ², the maximum depth is 2.6 m.