BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY
Mount Etna erupting. View of a night eruption of the volcano Mount Etna in Sicily. The glowing hot ejected matter leaves orange trails as it is thrown from the crater. Etna is a very active volcano which has erupted and released lava several times in recent history. Eruptions are caused by magma (molten rock) being forced up a vent by pressure from deep within the Earth.
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