Italy's Etna Volcano is seen erupting in this false-color handout image taken with the Advanced Land Imager (ALI) on NASA's Earth Observing-1 (EO-1) satellite at 08:59 GMT February 19, 2013. Each outburst, or paroxysm, featured emission of lava flows, pyroclastic flows, lahars, and an ash cloud,according to the Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV). The false-color image combines shortwave infrared, near infrared, and green light in the red, green, and blue channels of an RGB picture. Fresh lava, erupted hours earlier, is seen as bright red. (Photo by Jesse Allen/Robert Simmon/Reuters/NASA EO-1 ALI)
Italy's volcanic Mount Etna spews lava during an eruption on the southern Italian island of Sicily April 11, 2013. Mount Etna is Europe's tallest and most active volcano. Picture taken April 11, 2013. (Photo by Antonio Parrinello/Reuters)
In this photo, lava flows during an eruption of the snow capped Mount Etna volcano, near the Sicilian town of Catania, southern Italy. (Photo by Davide Caudullo/AP Photo/LaPresse)
A round circle of smoke coming from the mouth of the Etna volcano is seen in the sky during an eruption on the southern Italian island of Sicily April 11, 2013. Mount Etna is Europe's tallest and most active volcano. (Photo by Antonio Parrinello/Reuters)
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