Two cities Vesuvius buried differently

On the 24th of August in AD 79, according to the traditional date drawn from the only surviving eyewitness account, Mount Vesuvius erupted with a violence that its neighbours on the Bay of Naples had no real precedent for. The mountain had been quiet long enough that nobody living nearby seems to have recognised it as a volcano at all. Pliny the Younger, watching from across the bay and later writing to the historian Tacitus, described a cloud "like a pine tree" rising from the summit, the first surviving eyewitness description of what volcanologists now call a Plinian eruption, in his honour.

Pompeii, a prosperous commercial town a few miles from the mountain, was buried under several metres of pumice and ash over roughly eighteen hours, giving many residents time to flee, though thousands did not, or could not. The lightweight volcanic debris that fell on the town, while suffocating and eventually collapsing roofs under its weight, left enough of a void around some of the dead that nineteenth-century excavators, pouring plaster into the cavities left by decomposed bodies, were able to cast eerily precise impressions of people in their final positions: a dog straining against its chain, a group huddled together in a cellar.

Herculaneum, closer to the mountain and hit differently

Herculaneum, a smaller and wealthier seaside town nearer Vesuvius, met a different and in some ways more violent end. Rather than a slow burial under falling ash, it was struck by a pyroclastic surge: a fast-moving current of superheated gas and volcanic material that reached the town within minutes and incinerated organic material almost instantly. Paradoxically, this violence preserved things that Pompeii's slower burial destroyed. The intense heat carbonised wood rather than burning it away entirely, so Herculaneum has yielded wooden furniture, doors, roof beams and even a carbonised cradle, along with papyrus scrolls in a library at the Villa of the Papyri that are still, centuries on, being painstakingly unrolled and read using modern imaging techniques.

For a long time it was assumed that most of Herculaneum's population had escaped before the surge arrived, since so few bodies were found within the town itself. That assumption changed in the 1980s, when excavators working the old shoreline, now some way inland as the coast has shifted since antiquity, uncovered hundreds of skeletons in a row of boat chambers where people had evidently gathered to wait for a rescue by sea that never came. Their remains, unlike the ash casts at Pompeii, are actual bone rather than a plaster impression, and have given researchers unusually detailed evidence of the diet, health and even occupations of ordinary Roman townspeople.

Paestum, older than either and Greek rather than Roman

An hour or so further south along the coast, past Salerno, Paestum adds a layer of history considerably older than the eruption that made Pompeii and Herculaneum famous. Founded by Greek colonists around the sixth century BC as Poseidonia, it kept three Doric temples standing through Roman rule, medieval abandonment and eventual rediscovery in the eighteenth century, by which point the surrounding land had reverted to malarial marsh and the temples had simply been forgotten by anyone outside the immediate area. They are older than the Colosseum, older than the Pantheon, and among the best-preserved Greek temples anywhere outside Greece itself.

Paestum sits at the edge of the Cilento coast, a stretch of largely undeveloped shoreline south of the Amalfi peninsula that trades the fame of its northern neighbours for genuine quiet: fewer crowds, a slower pace, and a landscape where the temples share the view with olive groves rather than tour buses.

Visit Pompeii and Herculaneum together if the schedule allows it; seeing both makes the contrast between them far more vivid than either site manages alone, and Paestum, an hour beyond, rounds the day off with something considerably older than either.