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 Barney (Queensland) and it features prominently in a number of their stories. For Aboriginal people the peak has traditionally been regarded as a place to avoid. On 3 August 1828, explorer Allan Cunningham named the mountain "Mount Lindesay". However, the New South Wales Surveyor-General Thomas Mitchell is believed to have renamed it in the 1840s to "Mount Barney", after George Barney, a colonial engineer. Mitchell is believed to have assigned the name "Mount Lindesay" to the current Mount Lindesay (which Cunningham had originally named "Mount Hooker"). The first European to climb Mount Barney was Captain Patrick Logan, who reached the East Peak