Has sometimes given it a thought: There are those two famous towns exposed to an ancient disaster. Then it is like it is it. So far as there are other towns or settlements or anything like them, they are not at all as known. On the other hand there seems to be not any reason to think their end was unique. On the contrary, I find we have every good reason to thin something like what happened there has happened again and again. Volcanoes and other sources of disaster after all is not only older than humanity, but older than earth itself. So, should we expect there are lots of unexplored places of disaster, where archaeologists and others may find treasures of knowledge (though we should not forget at the cost of past tragedies) of the past? I think I would guess so.