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 Barker, Western Australia of Albany. The coastal town of Denmark is around by road to the south-west via the Denmark-Mount Barker Road. The timber town of Manjimup is west of Mount Barker, via Muir Highway. The Hay River, which flows into Wilson Inlet at Denmark, begins its journey just west of Mount Barker. Prior to European settlement, small groups of Aboriginal people, called the Bibbulmun (a clan of the Noongar) People, inhabited the area. These were a nomadic people who followed seasonal food supplies. The Aboriginal name for Mount Barker Hill is 'Pwakkenbak'. In December 1829, Mount Barker was named after Captain Collet