Turtle Lake is a direct English translation of Kus Tba, a small lake at the outskirts of Tbilisi, the capital of Georgia. The other, less frequently used name of this lake is K'ork'i.
Wikipedia https://en.wikipedia.org/wiki/Turtle_Lake_(Tbilisi)
Address კუს ტბისკენ მიმავალი გზა, Georgia
Coordinates 41°42'5.339" N 44°45'15.703" E