Perimeter of Thera before Minoan eruption

 volcano, draw only border

The Minoan eruption of Thera, also referred to as the Thera eruption or Santorini eruption, was a major catastrophic volcanic eruption (Volcanic Explosivity Index (VEI) = 6 or 7, Dense-rock equivalent (DRE) = 60 km3) which is estimated to have occurred in the mid second millennium BCE. The eruption was one of the largest volcanic events on Earth in recorded history. The eruption devastated the island of Thera (also called Santorini), including the Minoan settlement at Akrotiri as well as communities and agricultural areas on nearby islands and on the coast of Crete. The eruption may have contributed to the collapse of the Minoan culture. It has also sometimes been claimed to have caused climatic changes, but this is not known.