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Vanuatu

The thick, steam-rich plume from Guau Volcano blows directly northeast in this natural-color satellite image acquired on 24 April 2010. The thick steam is brighter white than the surrounding lower-altitude clouds. Vegetation is green, as is Lake Letas. Vegetation to the south and west of the volcano, damaged by ash and acidic volcanic gases, is dark gray-brown. Photo courtesy of NASA.