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,
Mount Nemrut on this monument. The eastern portion is well preserved, being composed of several layers of rock, and a path following the base of the mountain is evidence of a walled passageway linking the eastern and western terraces. Possible uses for this site are thought to have included religious ceremonies, owing to the astronomical and religious nature of the monument. The arrangement of such statues is known by the term hierothesion. Similar arrangements have been found at Arsameia on Nymphaios at the hierothesion of the father of Antiochus, Mithridates I Callinicus. When the Seleucid Empire was defeated by the Romans in