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 Invincible can drop below −20 C with wind chill factors below −30 C. Precipitation runoff from the mountain drains into the Kananaskis River which is a tributary of the Bow River. Mount Invincible Mount Invincible is a mountain summit located in Peter Lougheed Provincial Park in the Canadian Rockies of Alberta, Canada. The peak is visible from Alberta Highway 40, and the Kananaskis Lakes area. Mount Invincible's nearest higher peak is Mount Warspite, to the northwest. Like so many of the mountains in Kananaskis Country, Mount Invincible received its name from the persons and ships involved in the 1916 Battle of