Mount Etna's first 2025 eruption has intensified, producing substantial lava flows and ash emissions which disrupted air traffic around the Italian island of Sicily on Monday. The latest eruption of Europe's most active volcano, originating from an effusive vent at the Bocca Nuova crater, began last Wednesday. It was continuing to release lava as of Monday, with flows advancing southwest without immediate threat to inhabited areas. Catania Airport diverted dozens of flights over the weekend due to the spread of clouds of ash.