Ring of Fire volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire. The Ring of Fire is a direct result of plate tectonics: the movement and collisions of lithospheric plates, especially subduction in the northern portion. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand. The presence of a belt of volcanic activity surrounding the Pacific Ocean was observed in the 19th century. "They [the Japanese Islands] are in the line of that immense circle of
2010 eruptions of Mount Merapi one of the subsequent eruptive events. The Indonesian National Disaster Mitigation Agency stated at 10:00 on morning of 1 November that 38 people had been killed and 69,533 evacuated since Merapi began erupting on 26 October. The victims came from the district of Sleman, Yogyakarta, where 37 people (including 25 men and 12 women), and 1 baby died. Indonesia's vulcanology agency warned that flights around Yogyakarta may be disrupted. By the afternoon of 5 November the Indonesian National Disaster Management Agency was reporting 122 deaths attributable to the Merapi eruptions, primarily residents from Sleman, Daerah Istimewa, Yogyakarta. In the report