Kel-Suu Lake is located in the Naryn province, in Kakshaal-Too range of Inner Tien-Shan, located at an altitude of 3400 meters above sea level. It is quite close to the Chinese border. Surrounded by high rocky cliffs, the lake formed because of large rock fall that blocked the narrow channel of the river. Kel-Suu stretches for more than 12 km and is 2 km wide. The depth varies, depending on the season of the year - reaching the maximum depth towards the end of summer because of the melting snow and ice in the mountains. The water in the lake is fresh and exhibits a greenish color. One can experience the lake in its full beauty by going for a ride on a motorboat.