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 Hamiguitan wildlife sanctuary through the "Mount Hamiguitan Law" which was enacted under the initiative of senator Loren Legarda. In June 2014, the Mount Hamiguitan Range Wildlife Sanctuary was added to the UNESCO list of World Heritage Sites. Prior to this, the site has already been declared an ASEAN Heritage Park. Mount Hamiguitan Mount Hamiguitan is a mountain located in the province of Davao Oriental, Philippines. It has a height of . The mountain and its vicinity has one of the most diverse wildlife populations in the country. Among the wildlife found in the area are Philippine eagles and several species of