When you look carefully at the mountain, especially from the side by the sea (e.g. if passing on the Circumvesuvio train as we did several times) you can see that it is in fact a cone within a cone. The central cone is known as Gran Cono, and this is partially encircled by the steep rim of a caldera caused by the collapse of an earlier, and originally much higher structure called Monte Somma. The Gran Cono was produced during the eruption of 79. Its has been constantly changed by eruptions but is currently 1,281 m (4,202 ft).
I love mountains generally but there was something a little disconcerting looking up at this brooding presence and remembering just what power is locked inside it. I found myself wondering if the people of Naples ever think about the time-bomb waiting to explode just a few miles from their homes, or if they?re so used to it that they don?t give it a second thought as they go about their lives. Maybe though it is precisely this life lived on the edge that gives these people their energy and passion?

