Ring of Fire world's 25 largest volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under the southwestern United States and Mexico; the motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt. The active Queen Charlotte Fault on the west coast of the Haida Gwaii, British Columbia, has generated three large earthquakes during the 20th century: a magnitude 7 event
2010 eruptions of Mount Merapi suffering from serious depression and anxiety, while one man had committed suicide, reportedly due to stress. On Thursday, 18 November the Australian Government Department of Foreign Affairs issued a second update to their 11 November travel advisory bulletin acknowledging the announcement by Indonesian authorities on 15 November scaling back the 20 kilometre exclusion zone in some of the regions around Mount Merapi. The exclusion zone had been reduced to in the District (Kabupaten) of Magelang and to in the Districts of Klaten and Boyolali. The exclusion zone in the District of Sleman, towards the city of Yogyakarta, remained at .