Pompeii is one of the World’s great archaeology attractions. And more of it is being uncovered every day. Here is our brief guide to the latest research and discoveries.
Until recently, Pompeian archaeologists spent most of their time clearing volcanic debris to expose extensive areas of the city or trying to classify the architecture, frescoes and artefacts uncovered.
Now all that is changing. Only small areas are excavated at one time, but the idea is to dig deep, going below the AD 79 level to see a sequence of layers and tell the story of the city from its origins. At the same time, house layout and interior design are being analysed to reconstruct the city’s social and cultural life. In the hands of a new generation of researchers, ancient Pompeii is returning to life as never before.
|8th century BC||Iron Age agricultural settlement|
|6th century BC|| City founded by Oscans, Greeks or Etruscans
City walls built. Street grid laid out
First masonry building on site of House of Amarantus
|4th century BC|| Second phase of building on site of House of Amarantus
First settlement on site of House of the Vestals
Rome conquers the Bay of Naples
|3rd century BC||First masonry buildings on site of House of the Vestals|
|218-201 BC||War against Hannibal|
|2nd century BC||House of the Vestals doubles in size|
|146 BC||Destruction of Carthage and Corinth|
|91 – 87 BC||Social War; Pompeii besieged|
|80 BC||Roman colony founded|
|Early 1st century BC||House of the Vestals doubles in size and is substantially rebuilt|
|Late 1st century BC||House 12 constructed on the site of House of Amarantus|
|30 BC – AD 14||Reign of first emperor, Octavian-Augustus|
|20s AD||House of the Vestals substantially rebuilt with fountains|
|AD 62||Earthquake strikes Pompeii|
|70s AD|| House of the Vestals substantially rebuilt without piped water
House of Amarantus becomes a run-down bar
|AD 79||Pompeii destroyed by Vesuvius|
AD 79 – Vesuvius explodes
‘A fearful black cloud rent by forked and quivering bursts of flame sank to earth …’
Was Pompeii destroyed by falling pumice and ash, and Herculaneum by slow-moving flows of boiling mud? Were Pompeii’s victims killed by falling rocks, collapsing roofs, and suffocation inside rooms buried by the deluge? Did all the people of Herculaneum, on the other hand, escape?
So it used to be thought, but in the last 25 years vulcanologists have challenged the traditional view of the eruption. Combining the evidence of Pliny the Younger’s letters, the study of exposed volcanic strata in the Bay of Naples, and the experience of other eruptions, such as that of Mount PelÃ©e on Martinique in 1902, they have developed a new — and far more terrifying — account of what actually happened on 24-25 August AD 79.
On 20 August AD 79, however, major activity resumed with a series of quakes, increasing in frequency over the succeeding four days, as magma forced its way upwards into the feeder pipe of the volcano. Springs dried up around the mountain. Finally, at approximately one o’clock on the afternoon of 24 August, Vesuvius exploded.
The carapace of rock sealing the mountain was blown out, and a great brown column of pumice and ash rose vertically into the atmosphere, quickly reaching a height of about 15km. ‘It’s general appearance,’ Pliny wrote, ‘can best be expressed as being like an umbrella pine, for it rose to a great height on a sort of trunk and then split off into branches.’ The ‘umbrella’ — the spreading cloud at the top of the column — was driven south-east by the wind, and about half an hour after the explosion Pompeii, about 9km away, was shrouded in darkness and began to be pelted by pumice.
This ‘Plinian’ phase of the eruption lasted 18 hours, at first gaining force as the magma ripped rocks from the side of the vent and as subsidence collapsed more of the rock carapace, creating a wide ‘caldera’ through which far greater masses of material could reach the surface. At peak intensity, the eruptive column reached a height of 30km or more as the mountain ejected 150,000 tonnes of material per second. Altogether, in the Plinian phase, an estimated 2.6 cubic km of rock was blasted into the sky.
The air-fall of ash, pumice and occasional rock fragments, accumulating at about 15cm an hour, eventually covered Pompeii to a depth of almost 3m. Many flat roofs caved in under the weight. Sometimes people sheltering beneath were killed. Outside, fugitives waded through loose pumice in the darkness, trying to make their escape, and a few unlucky ones were struck down by rocks, falling tiles or collapsing masonry. But overall the Plinian air-fall phase claimed few victims, and many hundreds were still stumbling around in a grey desert of pumice on the morning of 25 August.
The mountain had not finished its work, however, and only now, in the final six hours or so of the eruption, did it became truly lethal.
During the night the eruption had changed its form. The gas-rich magmas from the upper chambers became exhausted, and heavier magmas from deeper down began to reach the surface. The difference is seen today where layers of grey-green pumice overlie those of white pumice. There were also violent tremors. As the discharge of magma cracked and collapsed the rocks overlying emptied chambers, the shocks rippled across the bay. The land was shaken by earthquakes. The sea was sucked back and then hurled at the beaches in seismic tidal waves. These changes heralded the onset of the ‘PelÃ©an’ phase of the eruption.
When Mount PelÃ©e erupted on Martinique in 1902, it released a pyroclastic ground-surge which travelled down the slopes of the mountain at 100 km per hour and incinerated the city of St Pier
re, instantaneously killing all but two of its 28,000 inhabitants. Pyroclastic surge deposits — and closely associated pyroclastic flow deposits — form the upper layers of the Vesuvian strata at Pompeii. Six separate flows, amounting to 20m of volcanic debris, covered Herculaneum, which, being 5km due west of the mountain, had suffered minimal air-fall.
The pyroclastic phenomenon is little understood. Probably, as the frothy upper magmas are spent and heavier lower magmas replace them, and as the pressure of the eruption reduces, the column of ejected material becomes denser, more unstable, and liable to collapse. Whatever the cause, the effect is clear enough. ‘A fearful black cloud,’ Pliny reports, ‘was rent by forked and quivering bursts of flame, and parted to reveal great tongues of fire, like flashes of lightning magnified in size. … Soon afterwards the cloud sank to earth and covered the sea …’
It took perhaps five or six minutes to reach Pompeii from the lip of the crater: a dense, rolling, ground-hugging mass of gas, ash and rock (the pyroclastic flow), preceded a few seconds in front by a scorching blast like that from a flamethrower (the ground-surge). Walls were thrown down, columns toppled, tiles shot like cannonballs down the streets. At its hottest, where temperatures reached anything from 400 ° to 800 ° C, the ‘black cloud’ carbonised wooden timbers, doors and shutters, and killed those it struck instantly, as brains boiled and skulls exploded in the flash. Others, where the heat was less, were asphyxiated as they breathed in hot gas and incandescent ash.
This is how we see them still, captured at the moment of death, rigid in burn-shock and gasping for air. In the closing stages of the eruption, after the pyroclastic discharges, magma and water mixed with explosive force, ejecting particles of fine ash and welding them together to form ‘accretionary lapilli’. As these floated onto Pompeii, they moulded themselves around bodies and solidified, preserving the shapes of the dead after the flesh had rotted away. In 1863 the Italian archaeologist Giuseppe Fiorelli devised the technique for recovering these shapes by pumping plaster into cavities before the volcanic overburden was removed.
By late afternoon on 25 August the eruption’s force was largely spent, and by dawn the following day calm was fully restored. In the 24 hours plus that the eruption had lasted, it is estimated that Vesuvius had unleashed thermal energy 100,000 times greater than that of the atomic explosion at Hiroshima. The result was the obliteration of a large chunk of ancient Campania. Towns like Pompeii were never rebuilt. Eventually even knowledge of where they had lain was lost.
How many escaped? We do not know. The people of Herculaneum, once thought to have got away, were found in excavations on the ancient waterfront in 1980, huddled on the beach and in boatsheds — hundreds of them, where they had died trapped between a seismic sea and a burning gas cloud. As for the Pompeians, though most had clearly left the city, did they in fact survive, or are the roads south clogged with the bodies of refugees felled by pyroclastic surges?
Many macabre secrets still remain entombed beneath the volcanic debris of AD 79.
Urgent Postcard from Pompeii
It’s ten years since I began work in Pompeii. Over that time the annual number of visitors has grown by a million, so that now about 2.5 million come each year. Why do so many come? When you walk along the streets lined with buildings destroyed in AD 79 you feel a chill reminder of your own mortality. Pompeii is also unusual among the great monuments of the world because here were once the homes of a complete living community, perhaps 12,000 people. Nowadays it’s a gentle walk of 25 minutes from one corner to the other. There’s a paradox: it was a small town, but it’s an enormous monument.
When you visit Pompeii, you find the bars and workshops of the humble alongside the mansions of the rich. Conserving the amazing wall paintings and mosaics presents difficult problems, but there are also real issues about how to treat the modest houses and shops. They may have no fine decoration, but they are an essential part of the complete city. If a wall in a bar falls down, the whole site is diminished.
The current Soprintendente, Pier Giovanni Guzzo, has spearheaded these new initiatives. In the six years since the law was passed, progress is tangible. For the visitors, there are new signs, leaflets and itineraries, and an excellent audio guide system. Across the site there are programmes of conservation under way – such as in famous houses like the House of Menander and the House of the Vettii. However, even with the increased funds, the needs of this site are so great that some have despaired that it can ever be preserved. The Soprintendenza has long welcomed initiatives from outside to help their efforts, and now there is an increasing momentum of people coming forward to help.
In November 2003 an initiative from the World Monuments Fund and the Kress Foundation, both based in New York, sponsored a meeting in Pompeii that brought together a range of archaeologists, conservators, architects and other specialists to compare ideas and look forward to co-ordinating efforts and sharing best practice. This was an exciting occasion, revealing both the scale of the problems and the will to do something about them.
the importance of the site, and actively want to preserve it. So encouraging tourists is essential to the sustained future of Pompeii.
How do we support the Soprintendenza in these shared ambitions? Our own contribution is to establish The Pompeii Trust, registered as a UK charity in 2002 (http://www.pompeiitrust.org/). It’s the first organisation in the world set up specifically to support conservation at Pompeii. We’ve commissioned a detailed conservation plan from London-based consultants Academy Projects, and are now working to raise money in the UK and the USA to implement our plans. But our initiative is by no means the only one. The World Monuments Fund and the Kress Foundation have made a major investment in plans for the House of the Silver Wedding. The University of Bologna has worked in the House of the Centenary. Meanwhile the Packard Humanities Institute and the British School at Rome have begun their significant programme at Herculaneum.
The last ten years in Pompeii have been an exciting time for archaeological research. Colleagues from many countries have produced new insights into Pompeii’s past, how it grew into the city destroyed in AD 79. There’s new hope that in the next ten years a co-ordinated international effort will begin to ensure its future.
Photos and Text: Rick Jones, Bradford University & Anglo-American Project in Pompeii
Current World Archaeology Issue 4 is a special issue devoted to Pompeii. In it we describe all the latest digs and discoveries that are going on there, as well as full details of what to see and what to do when you go there yourself! Below is a brief list of all the latest work which is covered in full in the magazine – click here if you wish to purchase the a copy.
First we report new thinking about the eruption itself. The old idea that most people died under a rain of pumice has gone. Now vulcanologists believe most survived the ‘air-fall’ but were killed by the searing heat of ‘pyroclastic ground-surges’ during the last and most terrible phase of the eruption.
Rick Jones, Bradford’s leading Pompeii archaeologist, then brings us up to date on new excavations at the House of the Surgeon, and new international efforts to rescue Pompeii’s crumbling remains.
Our next article reveals that Pompeii was threatened by traffic gridlock but for a one-way system enforced by the local council.
How to visit Pompeii
The nearest airport to Pompeii is Naples airport, to which there are many Charter flights, as well as Scheduled services via British Airways, Alitalia, EasyJet and BMI
Currently there are no direct flights from the US to Naples – most flights transfer at Rome or Milan.
Most of the nicer hotels are situated in Sorrento and the surrounding area which has good transport links to Pompeii, Herculaneum and many of the other attractions in the area.
Our plan is designed to help you find your way around Pompeii. We have included the traditional division of the city into regions (regiones) and city-blocks (insulae). Thus, for example, the House of Amarantus excavated by Reading University is Houses 11 and 12, Insula 9, Region I (30 on the plan). All houses in the ancient city can therefore be identified by number. Many also have popular names. (Note that the blue areas are as yet unexcavated.)
We have also provided our own numbered sequence of buildings within the city, divided into public buildings to visit (marked red), private buildings to visit (yellow), and places referred to in the text (turquoise). The areas shaded brown indicate the precise locations of places to visit. So the plan is both for use on site and for locating the places discussed in our articles.
Are you visiting Pompeii for the first time? Do you want some basic advice on getting the most out of your visit? If so, read on.
Go for at least one full day if you can. The site is huge and tiring to explore, so make sure you are well equipped (good walking shoes, bottled water, protection against the sun, etc), and pace yourself, taking breaks as needed (there is an excellent self-service cafeteria adjacent to the Forum Baths). Take care moving about: many surfaces are very uneven and it is easy to misjudge your footing. Be prepared, also, for some disappointment: many buildings are always closed, and though those listed here for visiting are usually open (or can be viewed well enough from outside), there will be periodic exceptions.
What should you see?
We have listed the main sites, but we can narrow this down to four key areas for thorough exploration. First, the Forum, the Basilica, the Temple of Apollo, the Temple of Jupiter, the Macellum and the Building of Eumachia form one group. The Forum is the key public open space and the public buildings around it play key roles in the life of the city – the Forum area is the centre of government, justice, religion and commerce within the city.
Second come the Triangular Forum and Doric Temple, the Large Theatre, the Small Theatre, the Gladiators’ Barracks, and the Temple of Isis – a kind of leisure complex, but with the difference, as always in the ancient world, that events here would have had a strong religious element too.
Thirdly, a walk down the Via dell’Abbondanza, taking in some of the attractions in the side-streets along the way is recommended. You should see the Brothel, the Stabian Baths, the Fullery of Stephanus, the Thermopolium of Vetutius Placidus, the House of Loreius Tiburtinus, and the House of Venus in the Sea Shell, ending up with the Palaestra, the Amphitheatre, and the Nuceria Gate Cemetery. Note that you will pass the House of Amarantus and the House of the Chaste Lovers on the way.
Finally, there is the northern part of town, taking in the House of the Ancient Hunt, the House of the Vettii, the House of the Faun, the Forum Baths, the House of Pansa, and the Bakery, before heading down the Via Consolare (past the House of the Vestals and the House of the Surgeon) to the Herculaneum Gate Cemetery. Many visitors miss the Villa of the Mysteries, but it is worth the walk beyond the Herculaneum Gate to reach this palatial extramural complex with its unique frescoes. Also in the north, another site generally missed is the Castellum Aquae, the city water-works, and the line of water-towers down the main street linking the Vesuvius and Stabiae Gates. It has now been made famous by Robert Harris’s novel (see ‘Books’).
Pompeii Interactive Map
Click on the map to launch the full size map.