Though the explosive and most visible eruptive activity seems to have subsided, lava is still flowing above and below ground at the largest volcano in the Galapagos Islands.
Three days after its surprise eruption on May 2, the Chaitén volcano of southern Chile was still pumping out dense clouds of ash. The plume extended over the Andes Mountains, across Argentina, and hundreds of kilometers over the Atlantic Ocean.
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.