Nemrut (volcano) of the earliest trade routes. Two eruptions of Nemrut were probably witnessed by people of Urartu, an ancient state located in the eastern Turkey. These eruptions occurred c. 787 BC (period of King Menua) and c. 657 BC (period of King Rusa II), and the latter eruption might cause the sudden disappearance of the city Uaiais located 30 km east of Süphan. In the 1980s, Japanese volcanologists studied the evolution of gases inside the caldera of Nemrut. They found that the ratio of helium isotopes He/He is 1.06, which indicates volcanic activity (most of the measured helium evolved from the
Mount Nemrut multiethnic kingdom and secure his dynasty's authority. Antiochus supported the cult as a propagator of happiness and salvation. Many of the ruins on Mount Nemrud are monuments of the imperial cult of Commagene. The most important area to the cult was the tomb of Antiochus I, which was decorated with colossal statues made of limestone. Although the imperial cult did not last long after Antiochus, several of his successors had their own tombs built on Mount Nemrud. For around half of the year, Mount Nemrud is covered in snow, the effect of which increases weathering, which has in part caused