Mount Etna blows smoke ring during volcanic eruptions

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Antonio Parrinello / ReutersItaly's volcanic Mount Etna spews lava during an eruption on the southern Italian island of Sicily on April 11, 2013. Mount Etna is Europe's tallest and most active volcano.Antonio Parrinello / ReutersAntonio Parrinello / ReutersA round circle of smoke coming from the mouth of Etna is seen in the sky during an eruption on the southern Italian island of Sicily on April 11, 2013.Antonio Parrinello / ReutersAntonio Parrinello / ReutersSee more photos of Mount Etna's eruptions on PhotoBlog.Follow @NBCNewsPictures  

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