Turgoyak is a lake in Chelyabinsk Oblast, near the city of Miass, Russia. It has a surface of 2638 hectares. The water of the lake has a great transparency. The quality of the water is comparable to that of Lake Baikal. A megalithic monument is found on an island in the lake, as well as ruins of a monastery. The lake is a popular tourist destination with resorts and holiday camps. Wikipedia