Nature blowing smoke rings over Mount Etna on #Sicily. This smoke ring/halo is over 150 feet across. It’s called a vortex ring caused by an explosion of steam from a circular vent #volcano #geography #geographyteacher #scienceteacher #teacher pic.twitter.com/0ODFVPfPO0
— Geography made easy (@easygeography) January 11, 2020
In a new round of eruptions this week, Italy’s Mount Etna volcano puffs dozens of smoke rings into the sky.