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,
Nemrut (volcano) fed by hot springs, which is why it is warmer at the bottom than at the surface and does not freeze in winter. The total area is 4.9×2.1 km, the average depth is 140 m, and the maximum depth is 176 m; the altitude of the lake is above the sea level. Lake Ilı (, "hot lake") was split from Lake Nemrut by an ancient lava flow. Ilı is located closer to the fault than Lake Nemrut; therefore it has a larger inflow of hot springs and a higher temperature. In the summer, it sometimes reaches 60 °C, and an