Lake Nemrut the world. Nemrut Caldera is world's second largest one. The western half of the crater is covered by the lake. AT the summit, there are five lakes, two of them existing permanently and the others seasonal. The biggest of the lakes is Lake Nemrut in the form of crescent. It contains freshwater of colorless, odorless and drink water quality. Lake Nemrut is situated at an elevation of about above main sea level. It has an area of , and its average depth is about with a maximum depth of . Nemrut Caldera is on the youngest volcanic cone in Turkey,
20936 Nemrut Dagi and 6 months (922 days). Its orbit has an eccentricity of 0.10 and an inclination of 19° with respect to the ecliptic. Due to its perihelion of less than 1.668 AU, "Nemrut Dagi" is classified as a Mars-crosser by the Lightcurve Data Base, while in JPL's data base, which requires a perihelion of less than 1.666 AU, the asteroid is simply an inner main-belt asteroid. The asteroid's observation arc begins 18 years prior to its official discovery observation, with its identification at Palomar Observatory in February 1953. The survey designation "T-1" stands for the first Palomar–Leiden Trojan survey, named after