Lake Teletskoye (Russian: Телецкое озеро, Altay: Алтын Кӧл, Altyn-Köl, literally: "Golden Lake") is the largest lake in the Altay Mountains and the Altai Republic, Russia, and has depth up to 325 meters.Situated at a height of 434 m (1,424 ft) above the sea level, the lake is 78 km (48 mi) long and 5 km (3.1 mi) wide and lies between the mountain ridges Korbu and Al-tyntu, on the junction of the Sailughem Mountains and the Western Sayans.