Mount Etna blows ‘smoke rings’ into sky in rare phenomenon

  • 6 months ago
Mount Etna in Sicily, the largest active volcano in Europe, has been blowing spectacular “smoke rings” into the sky since Wednesday. The "volcanic vortex rings", a rare phenomenon that is generated by the combination of rapid gas release and the vent shape, spewed out of a new crater that opened on Tuesday on Etna's summit.Source: AP

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