:’) There was a big eruption tracing to Thera 22,000 years ago, and (although no one can probably figure it out for sure) the big gap on the west side of caldera may date from that. In the book linked above (the Zangger title) that 22K year ago eruption generated pumice (I think it was, I don’t have the book here) found in Crimea (ditto). But anyway, it’s an old volcano. Some pumice which had been worked into some kind of artifact was excavated in Egypt (I think at Tell ed-Daba; a google search of FR for “Sturt Manning” will locate a post about this) had been assumed to be from Thera, but turned out to be from the Kos volcano, iow, 102K year old eruption. :’)
I used to correspond with Zanngger until he left Basil. His field is Geo-Archeology he has a different view on a lot of things ancient.