Tian Shan

In the northwestern spurs of the Fergana Range, steep mountains enclose Kara-Suu Lake above the Naryn valley. A great landslide formed a natural dam here, trapping the water between the Kengkol and Taktalyk heights. Streams enter the lake from the mountains, including the outflow of Kapkatash Lake, while water seeps through the barrier into the Kara-Suu River below.