From what I recall reading; approximately 3600 years ago a volcano by the name of Thera located within the archipelago of Santorini blew up with an estimated force of forty nuclear bombs and in the process permanently rearranged the Mediterranean. Some of the residue and particles which became airborne at the time could be found as far away as modern day Egypt. This explosion intermingles closely with some of the events as described in the Biblical story of the Exodus. Let’s hope we don’t witness a reoccurrence as it could rearrange the landscape of the Mediterranean again.
Ash from Thera fell on Greenland. Of course it wasn’t called Greenland yet.