Issyk Kul (also Ysyk Köl, Issyk-Kol: Kyrgyz: Ысык-Көл [ɯsɯqkœl]; Russian: Иссык-Куль) is an endorheic lake in the northern Tian Shan mountains in eastern Kyrgyzstan. It is the tenth largest lake in the world by volume (though not in surface area), and the second largest saline lake after the Caspian Sea.