Mount Etna blows rare smoke rings into sky

Near-perfect circles of gas emerged from Mount Etna in a rare display captured on camera on Saturday, 6 April. Volcanic vortex rings have blown into the sky from the largest active volcano in Europe since Wednesday. Scientists say Mount Etna sees the rare phenomenon, caused by a constant release of vapours and gases, more than any other volcano on Earth. The rings spewed out of a new crater that opened on Tuesday on Etna’s summit. There were no reports of disruptions at Catania airport. Watch more on Independent TV: Click here to subscribe to The Independent: About The Independent: Making Change Happen. The Independent is the world’s most free-thinking newsbrand, providing global news, commentary and analysis for the independently-minded. Connect with The Independent: Check out our full video catalog: Videos, dai