MDA INFORMATION SYSTEMS / SCIENCE PHOTO LIBRARY MDA INFORMATION SYSTEMS / SCIENCE PHOTO LIBRARY
Mount St Helens volcano. Coloured optical and infrared, Landsat satellite image of the volcano Mount St Helens (pink), Washington State, USA. North is at top. Forested areas are green, bare land is pink, water is black, and snow and ice are pale blue. Mount St Helens erupted in 1980 with a titanic blast that ripped out the north and north- eastern sides of the volcano. The blast flattened trees over a 600-square-kilometre area (pink). Snow lies atop Mount Adams at far right. Red areas seen in the forests that lie between are clear-cut areas where trees have been removed for timber.
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