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,
Orontes II Mount Nemrut detailing the ancestry of Antiochus I Theos of Commagene mentions an ancestor whose name was incompletely preserved, and who was a son of Aroandas. This Aroandas (Orontes) is inferred to be the second ancestor of Antiochus listed in the inscriptions from Mount Nemrut who bore that name, succeeding the first Aroandas, who in turn was the son of Artasyrus and who married Rhodogune, the daughter of Artaxerxes II of Persia. Friedrich Karl Dörner and John H. Young (1996) interpreted the first preserved letter of the name of the son of Aroandas II as a delta, so that the