For more than two centuries, the fame of the unique Rakhmanov springs has been going around the world. There are legends about the life-giving power of thermal radon springs.The lake occupies a small U-shaped valley, extending from southeast to northwest. The length of the coastline is 5.6 km, the volume of water mass is 20 million cubic meters. m. Flowing lake. Water transparency is 6 m. The temperature of the surface layers is 16, bottom 4.6 degrees. Located in a narrow and deep depression about 9 km. from the source of the river Arasan at an altitude of 1760 m.a.s.l.