Europe

Mount Etna Puffs Perfect Smoke Rings Into the Italian Sky

HALO TOP

The volcanic vortex rings are formed when hot gas shoots through cylindrical vents.

A view of 'Volcanic Vortex Rings' which rise hundreds of meters above the rim that is blown out from the Etna volcano that is active again in Catania, Italy on April 07, 2024.
Salvatore Allegra/Getty Images