In 79 AD Vesuvius erupted with the most deadly effect. A pyroclastic cloud engulfed both Pompeii and Herculaneum. They were both buried in superheated ash.
The last eruption was in 1944. My father was stationed with an Italian family near Naples. He went up the volcano while it was erupting and had an ashtray made out of molten lava.
It was interesting for me to see the very lava flow that my father had witnessed flowing.