A screenshot showing the clustering of earthquakes to the north-east of Santorini, which prompted the Greek government to suggest evacuations / school closures ...

This area is part of the Hellenic volcanic arc, caused by the subduction of the Greek sub-plate under the northward moving African plate. There has been speculation that a volcanic eruption could result if activity continues, although the current crop of 'quakes do not have the full spectrum of vibrations that such precursors usually exhibit.

Captured on 8-2-2025 at 15:53:39 from the news-pages on www.bbc.co.uk.
Not my Image : fair use & public education