The Kamchatka peninsula is familiar to anyone who played the game Risk as much as I did as a kid: it's at the extreme northeast end of the Asian continent. It's also the home of many volcanoes, including Kizimen, which which has been erupting more or less continuously since December of 2010 -- after eight decades of rest.

The plume is white and tan, meaning it has water vapor in it as well as ash, and fresh ash falls line the flanks. These may also be from pyroclastic flows - torrential waves of burning hot ash which plow down the slopes at hundreds of kilometers per hour.

Original image

NASA Earth Observatory image by Robert Simmon, using data from the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.