The 100 m false-colour image of 11 September 2016 shows us the Cascade Range, a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains. The Cascades are part of the Pacific Ocean's Ring of Fire, the ring of volcanoes and associated mountains around the Pacific Ocean. All of the eruptions in the contiguous United States over the last 200 years have been from Cascade volcanoes. The Cascade volcanoes define the Pacific Northwest section of the Ring of Fire, an array of volcanoes that rim the Pacific Ocean. The Ring of Fire is also known for its frequent earthquakes. The volcanoes and earthquakes arise from a common source: subduction. Volcano’s/Mountains seen on this image from top to bottom: Mount Rainier, Mount St. Helens (left) Mount Adams (right), Mount Hood, Mount Jefferson, South Sister.