Underwater Santorini volcano eruption 520,000 years ago was 15 times bigger than record-breaking Tonga eruption

A 500-foot-thick layer of pumice rock on the Mediterranean seabed indicates Santorini volcano ejected 15 times more material than Hunga-Tonga during a previously unknown eruption.

from Livescience https://ift.tt/CkL3foa
via IFTTT