In 1956, when the great earthquake of 7.5 Richter occurred in Santorini without the volcano being activated, it caused dozens of deaths and the tsunami that was caused reached Kalamata.
Over 50 people died and more than 100 were injured. Santorini was almost leveled. The earthquake was registered as the largest in Europe during the 20th century.
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It was spring in Santorini (and this is proven by seeds and pollen grains found in volcanic ash) in 1,600 BC, when the largest volcanic eruption that Humanity has known in at least the last 10,000 years took place, which completely destroyed Thira and the nearby islands within a radius of many kilometers.
The eruption raised tidal waves, which swept the coasts of the nearby islands and northern Crete.
Professor Spyros Marinatos, who had carried out excavation activities in both Crete and Santorini, had expressed the opinion that the Minoan eruption may have been the one that caused the destruction of the Minoan civilization.