After leaving the Amalfi coast after lunch on our excursion from the port of Naples we went to ruins of Pompeìì.   Most ruins happen over a period of time for a variety of reasons, but of course in this case it was a major catastrophe that killed the entire population from the ash and fumes of Mt. Vesuvius.  It was a warm day for October and it was a lot of walking, but well worth it.   I would not advise doing it in the heat of summer, or at least have a hat and sunscreen.