Ridge of Pennata islet collapses after the strongest earthquake in 40 years strikes Campi Flegrei, Italy An earthquake swarm with the strongest quake registered as an M4.6 quake struck the Campi Flegrei area in southern Italy on June 30, 2025, prompting evacuations and train delays in the region.

The strongest #earthquake in 40 years occurs at the #CampiFlegrei volcano during an #EarthquakeSwarm and the #RidgeOfPennata Islet collapses

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