Composed of visible and infrared light, this image shows a relatively calm-looking Redoubt Volcano on May 5, 2009. The only visible sign of activity is a steam plume at the summit.
Published May 7, 2009
In early September 2007, Tanzania&#rsquo;s Ol Doinyo Lengai Volcano erupted, sending a cloud of ash into the atmosphere. The volcanic plume appears pale blue-gray, distinct near the summit, and growing more diffuse to the south. The charcoal-colored stains on the volcano’s flanks appear to be lava, but they are actually burn scars left behind by fires that were spawned by fast-flowing, narrow rivers of lava ejected by the volcano.
Published Sep 19, 2007
