Mount Etna Erupts: Crater Collapse Triggers Kilometers-High Ash Cloud
Significant Volcanic Activity Reported in Sicily
by Anne Martin 3 June 2025
Mount Etna, Europe’s most active volcano, experienced a notable event overnight from Monday to Tuesday, as a portion of its Southeast crater underwent a partial collapse. This geological occurrence resulted in the generation of an impressive eruptive cloud, which ascended several kilometers into the sky. The activity was swiftly confirmed and is currently under close observation by the National Institute of Geophysics and Volcanology (INGV) in Catania, Italy, providing immediate scientific oversight of the unfolding volcanic phenomena. The collapse of the crater rim was followed by a marked increase in volcanic tremor, indicative of heightened seismic activity within the volcano. Observers also reported the occurrence of small, yet distinct, pyroclastic flows. These fast-moving currents of hot gas and volcanic debris traveled approximately 1.5 kilometers, descending towards the uninhabited Valle del Bove, a large depression located on Etna’s eastern flank. The towering plume of ash and gas that formed then dispersed predominantly towards the south and southwest, carried by the prevailing winds. The atmospheric dispersal of volcanic ash had immediate repercussions for the surrounding region. Reports confirmed ash fall in several nearby towns and cities, including the major Sicilian hub of Catania, with effects extending as far as Lentini and Carlentini. This widespread ash fall created challenging conditions, particularly impacting air travel. As a direct consequence, the airspace over Catania’s Fontanarossa Airport, a crucial gateway to Sicily, was temporarily closed to ensure the safety of both flights and passengers. This recent episode marks Mount Etna’s first substantial eruptive activity since December 2023. The volcano, a UNESCO World Heritage site, is renowned for its frequent and often spectacular eruptions, which are typically contained within its summit craters. Scientists and local authorities continue to monitor the situation closely, assessing any ongoing risks and keeping the public informed about Europe’s iconic active volcano.
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