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) northern edge of the caldera). The average height of the walls of the caldera, measuring from its bottom, is . The lowest point of the caldera coincides with the deepest point of Lake Nemrut ( above sea level). There are three lakes at the bottom of the caldera: the larger Lake Nemrut and two smaller ones, Ilı and the so-called "Seasonal Lake". Lake Nemrut () is located in the south-western part of the caldera and is now a freshwater lake. Similar to Lake Van, under the influence of volcanic processes it is gradually becoming a saline lake. The lake is