The Minoan eruption of Thera, also referred to as the Thera eruption, Santorini eruption, or the Late Bronze Age eruption, was a major catastrophic volcanic eruption with a Volcanic Explosivity Index (VEI) of 6 or 7 and a dense-rock equivalent (DRE) of 60 km3 (14 cu mi), Dated to the mid-second millennium BCE, the eruption was one of the largest volcanic events on Earth in recorded history.