Mount Etna, the largest active volcano in Europe, has been blowing spectacular 'smoke rings' into the sky.
Sicily's Mount Etna blows 'rare' smoke rings into the sky
The "volcanic vortex rings" are a rare phenomenon generated by the combination of rapid gas release and the vent shape, spewed out of a new crater that opened on Etna's summit.
Saturday 6 April 2024 13:06, UK