Repeated earthquakes are rattling Greece’s volcanic island of Santorini. The quakes are prompting authorities to dispatch rescuers with tents, a sniffer dog and drones and to shut down schools on four islands.

Santorini has been impacted by over 200 seismic tremors in the last 48 hours, with experts stating that nothing should be ruled out

Santorini is part of the Hellenic Volcanic Arc, an active volcanic field. A major volcanic eruption 3,600 years ago caused a devastating tsunami that reached Crete, according to historians. However, no major volcanic catastrophes have been recorded in modern history.