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Ancient Pompeii's Geography

A map of Pompeii and Mount Vesuvius, roads and other major landmarks.Pompeii's geography in terms of position, local climate and terrain was the foundation of it's development in every sense. There are similarities and differences with the geography of Ancient Rome: Rome was essentially built on and around hills in a marshy area at the mouth of the river Tiber, the geography of Pompeii on the other hand was dominated by the mountain to the north-west and its immediate view over the sea. Like Rome however it commanded a good position in terms of control over trade routes and good access to the river and water ways which at the time were by far the most efficient form of goods transport.

Pompeii is situated in the region of Campania, to the south of Rome. The region is remarkably well delimited both geographically and historically. On the northern side we have the river Volturno, to the east and south we have the Apennines and the Sorrento peninsula. In the middle we have a vast plain made fertile by relatively recent volcanic activity. To the west lies the sea.

The image below shows these features looking inland from the sea, so Mount Vesuvius is on the left hand side and the Sorrento peninsula is on the right. It is important to note that sedimentary deposition has left Pompeii further inland than it was in Roman times.

Pompeiis position made it an obvious settlement for the Italic peoples of the Campanian region: the Oscans & Samnites, cousins of the Latins, founders of Rome to the north. Around the 6th century the Greek advance from the south was halted here by the Etruscans who dominated the regions northwards. It was thus a natural melting pot of cultures and influences.

The bay of Naples has always acted as a fulcrum for the region and provided ideal harbours for international trade. Puteoli (modern Pozuoli) in particular had a thriving international mercantile community since the second century BC which established routes with Gaul to the north as well as the Hellenistic east. This clearly meant an influx of great wealth and culture and it is interesting to note that some of the religious cults of the East were present here well before they reached Rome.

The names of the most pronounced families of Pompeii found in the excavations have proved to be of Samnitic origin with heavy doses of intercultural mixing. Samnitic inscriptions have also been found as well as an evident mixture of building and architectural approaches pertinent to the different cultures present.


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Greek settlers mixed with the genetics of the local Italic peoples enabled the region to withstand the pressure of Romes expansion and at the same time achieve artistic and cultural excellence. It opened Campania to the influence and trade with the Eastern Mediterranean and cultures which Alexander the Great had conquered, including Egypt for example to the East. Studies of amphoras show that there was extensive wine trade with Gaul to the north whilst the influence in Pompeii was undoubtedly Greek and even oriental/north African, for example in the religions, town planning and other varied aspects of the city. These northern trade routes were likely learned from the Etruscans.

The Campanian region not only had a location suited to trade but also had the fortune of a temperate climate and extremely fertile soils ideally suited to vineyards and olive groves. Wine and oil production was therefore a fundamental engine for the local economy and the citys life. The combination of warming climate and foreign military campaigns enabled new foreign plants and crops to be acclimatised, grown and traded.

Proximity and annexation to Rome, achievement of full citizenship and inflow of Roman families completed the recipe of this cultural melting pot with its local landed gentry, greek arts and crafts, Etruscan love for trade and Romes "Pax Romana". It was hence a rich provincial city which in spite of its own troubles was well placed to ride Romes gravy train like many others. It is not surprising that the local, largely rural population grew from a couple of thousand people in the earliest days to some 20,000 people at the time of the eruption.

Other aspects of Pompeii's geography:

A look at the architecture of ancient Pompeii and of the site over which it was built also shows us how the city's shape and town planning was heavily influenced by the site over which it was built: A prehistoric lava flow which had made a N-S sloping ledge 40m above sea level. Various forms of detritus had levelled the ledge out to a degree although on the whole there was only one relatively flat area on which the Forum was eventually built. The rest of the city is very much dislevelled and sloping.

Whilst the city saw some 5 or 6 successive waves of intervention, the original city was clearly built on the flattest and best exposed area of the ledge. The subsequent extension of the city walls was forced by local geography to follow an organic rather than geometric shape. The city's road system is also a superposition of Greek rigour on top of pre-existing situations and stratographic constraints.


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Pompeii's geography - comments and postings....

Ancient Pompeii Geography Forum

A readers' question:

I am doing my A2 Level history coursework on Pompeii, assessing the significance of it and it's unique-ness. Is the geography of Ancient Pompeii significant in terms of social, economic and political factors and is there evidence of a change from the eruption
If you could help me answer these questions I would be very grateful.

By the way your site is extremely good



Thanks for the question and lovely compliment which makes all the work worthwhile! Well the answer is surely "Yes, the geography of ancient Pompeii is absolutely significant": Let's see how much we can pack into a short paragraph.....The volcanic nature of the region makes it rich in minerals and water springs with obvious significance for agricultural produce, woodlands (on the hills), access to materials for construction and consequently the growth of a healthy population. The proximity of the river Sarno and of the sea also meant access to trade routes: it is important to note that at that time transport by sea was far more efficient and economical than that by road, hence permitting long distance trade and import/export of local produce. The socio-economic impact of all this is an obvious consequence. We just need note the early presence of Eastern divinities to realise that contacts across the Mediterranean, surely engendered by the richness of trade, had their social significance. From the political perspective we need but consider some of the graffiti on the walls and the involvement in public life of wealthy citizens who had become rich through trades such as baking; note that baking requires the mass production of flour - thanks to the introduction of soft wheat from the East - to make bread and cakes which in turn drove thirst and hence a demand for drinks such as wine. These people  climbed their way in the political ladder as well as the social ladder. Regarding the change from the eruption....hmmm not sure I understand the question. Certainly the eruption destroyed the region and local society with huge economic impact not only on the area local to Pompeii but on the entire Roman empire.


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"ancient pompeii" was written by Giovanni Milani-Santarpia for - Rome apartments