The eastern side of the Ring of Fire is just as active as the western. Along North America’s western coast the Cascade range forms a line of volcanoes stretching over 700 miles. Included in this range are Mt. Rainier, Mt. Hood, Mt. Shasta, and Mt. St. Helens which had a major eruption in 1980. Farther south you have the San Andreas Fault system that is responsible for 1000’s of earthquakes each year in California and the surrounding areas. If you are looking for active geology on the earth, look no further than the Ring of Fire.