Mount Etna, the volcano that towers over eastern Sicily, has again captivated the world with a spectacular show, spewing smoke and high into the sky. But the defining event of Monday’s eruption was the more rare pyroclastic flow from the southwestern crater not visible from a distance.

Mount Etna is one of the world's most active volcanoes. It's the most active volcano in Europe. Its activity increased during 2025, including spectacular eruptions in February, April, and May this year, producing lava flows and ash clouds.