These images of Mount Sidley were acquired on November 20, 2014, by the Operational Land Imager (OLI) on Landsat 8. The volcano stands about 4,200 meters (13,800 feet) above sea level and 2,200 meters (7,200 feet) above ice level. The caldera wall, which is mostly shadowed in this image, is about 1,200 meters (3,900 feet) high. The caldera floor spans 5 kilometers (3 miles). Sidley is one of five volcanoes in the Executive Committee Range, which stretches about 80 kilometers (50 miles) from north to south.