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 Hereford include snowshoeing, cross-country skiing, and wildlife observation. Mount Hereford Mount Hereford () is a mountain located in Coaticook Regional County Municipality, Estrie, Quebec, Canada. It rises to . Mount Hereford is a reference to a city and a county of the same name in England. A dictionary from 1832 refers to it as "Hereford Mountain." However, some locals refer to it as ' or ' (). It is possible to hike to the summit of Mount Hereford via the Neil Tillotson Hiking Trail, which is a long linear trail. It is accessible from either Clowery Road in Saint-Herménégilde or Coaticook