The Operational Land Imager (OLI) on Landsat 8 captured a natural-color view of Klyuchevskaya Volcano as it erupted on February 19, 2015. The top image is a closeup pulled from the second, wider view.
According to the Kamchatkan Volcanic Eruption Response Team (KVERT), a Strombolian and Vulcanian eruption has been ongoing at the volcano, with fresh lava, rock bombs, and ash plumes. The ash has reached as high as 8 kilometers (26,000 feet) on several days in mid-February, leading to a aviation code red in the area.
NASA Earth Observatory image by Jesse Allen, using Landsat data from the U.S. Geological Survey. Caption by Mike Carlowicz.