Pompeii Is Being Excavated Again, and Deliberately Leaving a Third Buried

The gods on the wall

In February 2025, the Archaeological Park of Pompeii announced one of the most spectacular finds in decades: in a grand banquet hall in a building now called the House of the Thiasos, a megalography, near-life-size figures marching across three walls against a burning red ground, depicting the procession and mysteries of Dionysus. It dates to roughly 40–30 BCE, and the only comparable work known anywhere is the famous frieze in the Villa of the Mysteries just outside the city walls. The new one is arguably richer: its ecstatic followers of the wine god are also hunters, ringed by a border of animals living and slain.

It is the kind of discovery that produces headlines about treasure and lost worlds. The more important story is the one about method, because this dig is defined as much by restraint as by revelation.

The biggest dig in a generation, with a catch

The find comes from Regio IX, a large block of the city that is the site of the most extensive Pompeian excavation in a generation. Work resumed there in 2023, but not primarily to hunt for frescoes. Its first purpose was defensive: the boundary between the excavated city and the still-buried city is a wall of packed volcanic debris, and left alone it erodes, slumps, and collapses onto the ruins below. Much of Regio IX is, in effect, maintenance archaeology, stabilizing a dangerous margin, and documenting what that stabilizing necessarily uncovers.

That framing matters, because it inverts the usual impulse. For most of its history Pompeii was dug the way you would open presents: fast, acquisitively, to get the objects out. The nineteenth and early twentieth centuries stripped enormous areas with little of the recording that modern archaeology considers non-negotiable, and much of what they exposed has been decaying in the open air ever since.

What the Park is choosing not to do

Under its current director, Gabriel Zuchtriegel, Pompeii operates on a principle that would have baffled its early excavators: roughly a third of the city is to stay buried on purpose. The reasoning is that excavation is destruction. The moment a fresco or a floor meets air, light, and rain, it begins to die, and it commits the site to a permanent, expensive duty of conservation. Digging faster simply manufactures more of that obligation than the world can currently meet.

So the modern policy inverts the old one. Where earlier generations measured success in acres opened, Pompeii now measures it in what can be properly conserved, recorded, and, crucially, left for archaeologists not yet born, working with tools not yet invented. Every find in Regio IX is published in the Park's own scholarly e-journal rather than dribbled out as spectacle, and the buried third is treated not as a backlog but as a deliberate reserve.

The old question was how much of Pompeii we can dig up. The new question is how little we can get away with disturbing, and it is the more advanced one.

Why the restraint is the real headline

There is a temptation to read the buried third as timidity, or as a funding excuse dressed up as philosophy. It is closer to the opposite: a discipline that has learned, at its most famous site, that the capacity to excavate has outrun the capacity to care for what excavation produces. Pompeii already contains kilometers of wall painting slowly fading in the weather. Adding to that faster than it can be stabilized would not be a triumph; it would be a transfer of loss to the future.

This Report keeps returning to a single idea about the deep past: that the most trustworthy archaeology is the kind willing to leave the story unfinished rather than force it. Pompeii, of all places, is now practicing exactly that, pulling a Dionysian masterpiece out of the ash in one season while consciously refusing to reach for the third of the city still sleeping beside it. The gods on the wall will draw the crowds. The empty, unexcavated ground next to them is the more sophisticated decision.