The Pacific Ring of Fire, or Ring of Fire for short, is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 25,000 mile horseshoe shape, it's associated with an almost continuous series of oceanic trenches, volcanic belts, volcanic arcs and/or plate movement. The Ring of Fire contains 452 volcanoes and it's home to over 75 percent of the world's active and dormant volcanoes. It's sometimes called the circum-Pacific belt or the circum-Pacific seismic belt. Approximately 90 percent of the world's earthquakes and 81 percent of the world's largest earthquakes happen along The Ring of Fire.