GARY HINCKS / SCIENCE PHOTO LIBRARY GARY HINCKS / SCIENCE PHOTO LIBRARY
Caldera. Computer artwork of a caldera, a large basin-shaped volcanic depression, that has formed as a result of a massive volcanic eruption. Seen here are hot springs, geothermally-heated groundwater emerging as springs at the Earth's crust. Over time the magma chamber beneath a caldera solidifies (red) and the volcano becomes dormant or extinct. The caldera may then fill with water to form a lake. For an image of the volcanic eruption that caused the caldera see image E380/0798.
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