I have been able to find a small map of the area of production, in two
versions. Unfortunately, I was not able to extract it from the sponsoring
website or to change the size to make it easier to see.
It includes the entire area of the Vesuvius national park and thensome,
comprising the territory, apparently according to political boundaries, of
18 comuni or municipalities. It's a large area, directly to the east of the city
of Naples. It does not include Pompei. Here are the urls of the two
versions I have found:
http://www.qualigeo.eu/prodotto-qual...l-vesuvio-dop/
and
http://www.foodinitaly.com/prodotti/...DOP-17705.html
On both of these, you can choose at the top left of the little chart to show
the geographical terrain, with or without a map of major roads, or satellite
imagery, with or without labels.
An interesting point is that the "zona di produzione" includes a great
variation in types of land, from the area immediately along the coast
to places pretty far inland, and slopes in all directions from the center
of the volcanic cone. There must be substantial variety in weather, soil
types and a good many other factors. It would be interesting to see the
actual locations of some of the individual producers to guess what actual
characteristics they are or are not taking advantage of.