Before the Eruption: A Mountain Nobody Feared
In the first century AD, Vesuvius was not considered a volcano. It was simply a mountain — unusually fertile, covered in forests and vines up to its jagged summit, a pleasant backdrop to the prosperous cities of the Bay of Naples.
The Romans were unaware of its true volcanic nature, even though in 62 AD the area had been struck by a powerful earthquake and significant ground deformation — signs that went unread. The geographer Strabo, writing in the first century BC, noticed that the upper slopes had a scorched, ashen look, and speculated that there might be ancient fire beneath, but nobody took it as a warning.
In the Roman era, the true nature of Vesuvius was unknown, while the extraordinary fertility of its slopes was well documented — rich in minerals and especially in potassium. The wine produced here was among the most prized in the empire. The poet Martial described the volcano in his Epigrams as “verdant with dense vineyards, laden with wine from noble varieties.”
Pompeii was a city of around twenty thousand people. It had theatres, bathhouses, a large amphitheatre, a busy port, and streets lined with wine bars. Herculaneum was smaller and wealthier — a seaside retreat for the Roman upper class. Stabiae, Oplontis, Boscoreale: prosperous towns scattered across the plain between the mountain and the sea.
Nobody was afraid.
October 79 AD: The Afternoon Everything Changed
The eruption began on 24 October 79 AD, after a period of quiet lasting approximately eight centuries. In the early afternoon, a series of explosions caused by rising magma contacting groundwater opened the eruptive vent, generating an eruption column approximately 25 kilometres high above the volcano.
The Plinian phase lasted approximately 17 hours, during which 6.4 cubic kilometres of volcanic material were erupted from a column that oscillated between 14 and 34 kilometres in height.
Pompeii and Oplontis were partially buried under approximately three metres of pumice; under their weight, the roofs of houses began to collapse and the first victims fell. Those who fled in time survived. Those who stayed, or returned during a brief lull in the night, did not.
Herculaneum was struck first by superheated pyroclastic clouds travelling at over 80 kilometres per hour with a temperature of around 400 degrees, then by mudflows that buried the city under approximately 20 metres of volcanic material.
By the morning of the second day, it was over. Three cities gone. A coastline altered. A plain buried. And where there had been vines and forests and olive groves, there was now a grey desert of ash and pumice stretching to the sea.
Pliny the Younger, who watched the eruption from across the bay at Misenum and lost his uncle Pliny the Elder in the disaster, described the sky turning black in the middle of the day. He compared the eruption column to the shape of a maritime pine tree — spreading wide at the top. The term Plinian eruption has been used for this type of event ever since.
The Paradox of Destruction: How Fire Made the Soil
Here is where the story turns.
The same volcanic material that buried Pompeii — the ash, the pumice, the lapilli — is also what makes this soil extraordinary. Over the centuries following each eruption, these deposits break down into a substrate of exceptional mineral richness.
The Vesuvian soils are fertile, beyond the Mediterranean climate, for the drainage of water favoured by their composition and above all for the high potassium content of the lavas. Potassium is essential for plant growth — it regulates water use, strengthens cell walls, and concentrates flavour in fruit. The vine, in particular, thrives in it.
The volcanic terrain, composed of lava, ash, pumice and other volcanic materials, produces a soil rich in minerals such as potassium, magnesium and calcium — elements that are essential for plant growth and contribute to the extraordinary fertility of this land.
There is also the matter of drainage. Volcanic soils are porous and well-draining. Vine roots cannot tolerate waterlogged ground — they need to work, to push downward through the soil in search of water and nutrients. On the slopes of Vesuvius, where the subsoil is loose and mineral-rich, roots descend deep and emerge with flavour that reflects the geology beneath them.
The Romans figured this out quickly. The situation that the eruption of 79 AD overturned in a matter of hours — dense vegetation reaching the jagged summit, lush vineyards covering the lower slopes, alternating with olive groves and orchards on the plain down to the sea — had reasserted itself within a few generations. The same sequence: destruction, then regeneration, then abundance. It has repeated itself many times since.
The Landscape Today: What You See When You Look
Standing in our vineyard at Bosco de’ Medici and looking south toward the plain, you are looking at a landscape that has been shaped by all of this.
The archaeological park of Pompeii lies five minutes away — a city suspended at the moment of its destruction, slowly being unburied and understood. The profile of Vesuvius rises behind you, its summit visible on clear days from the rows. The sea is a thin blue line to the southwest.
What you cannot see directly is the soil beneath your feet. But it is there: grey-brown, porous, volcanic, mineral. Alive. The same material that fell on Pompeii has, over two millennia of weathering and decomposition, become the ground in which our Piedirosso and Caprettone are rooted. The same potassium that Strabo noted. The same fertility that Martial celebrated.
The volcanic origin of the soils plays a central role in this territory: the mineral-rich, well-drained terrain allows the vines to develop unique characteristics that express themselves in the wine, often distinguished by a marked minerality and a particular gustative tension.
We have been making wine on this land for decades, with eight hectares of vines between 250 and 300 metres above sea level. Every bottle is, in some sense, an archive of the geology beneath it — of eruptions ancient and recent, of ash turned to soil turned to flavour.
Come and See It for Yourself
The best way to understand a landscape is to stand inside it.
At Bosco de’ Medici, we offer guided vineyard tours and wine tastings in our underground Caveau — a tasting room carved into the volcanic rock beneath the estate, where the temperature stays constant year-round and the wines from previous harvests rest along the walls.
It is a few minutes from Pompeii. It is at the foot of Vesuvius. It is, in a very real sense, built on the same material that built this landscape — and has been building it, and rebuilding it, for two thousand years.