Vortex Rings

Mount Etna, Europe's largest volcano, showcases rare volcanic vortex rings, a phenomenon akin to smoke rings.

These rings are formed by the rapid release of gas, primarily water vapor, through circular vents in the crater.
Etna's continuous activity includes both summit and flank eruptions, with documented events dating back 500,000 years.
Volcanic vortex rings have been observed at various volcanoes worldwide, with Etna being a notable hotspot.