An artificial intelligence (AI) model has revealed never-before-seen geological structures at Italy's Campi Flegrei volcano, including a clear "ring fault" that could unleash magnitude 5 earthquakes.
So far in 2025, Campi Flegrei has produced five earthquakes above magnitude 4, and the volcano has been showing signs of unrest since 2005. But most of the earthquakes triggered in the region are going undetected, according to a new study that used AI to pinpoint tens of thousands of seismic events that have gone under the radar over the past few years.
