You descend one hundred and sixteen steps into the earth beneath Reims, and the city vanishes. The traffic on the Boulevard Henry Vasnier, the tram rattle, the school children eating crêpes outside the cathedral — all of it dissolves into a silence so complete you can hear the moisture collecting on chalk walls that were ancient seabed when dinosaurs still walked above them. The air is ten degrees, maybe eleven, and it smells of damp mineral and something faintly yeasty, alive. You are standing inside the crayères of Taittinger, in a vaulted gallery that once formed part of the Abbey of Saint-Nicaise, and the bottles stacked around you in every direction — millions of them, resting on their sides in the blue-white dark — are undergoing a transformation that has no equal in the world of wine.
I have been visiting these cellars for twenty years, and they never fail to humble me. Not because of the champagne, though the champagne is extraordinary. Because of the sheer improbability of the place itself — the idea that Gallo-Roman quarrymen, hacking chalk blocks from the earth in the third and fourth centuries to build their villas and temples, were inadvertently creating the perfect environment for a wine that would not be invented for another thirteen hundred years.
Written in Chalk
The geology is staggering in its specificity. The chalk beneath Reims is Cretaceous-era Belemnite chalk, laid down roughly seventy million years ago when this part of northern France lay beneath a warm, shallow sea. Over millennia, the compressed skeletons of billions of microscopic marine organisms formed a stone that is at once porous and insulating — capable of absorbing moisture to maintain a constant humidity of around eighty percent, while holding temperature steady at ten to twelve degrees Celsius year-round. No modern climate-control system has improved upon it. No one has needed to try.
The Romans quarried this chalk using a technique called hagues et bourreaux — carving pyramidal pits that widened as they deepened, leaving behind cathedral-scale chambers with soaring pointed vaults. When the quarries were abandoned, the chambers sat empty for centuries, until the champagne houses of the seventeenth and eighteenth centuries recognised what they had inherited. Today, roughly two hundred and fifty kilometres of these tunnels and galleries honeycomb the earth beneath Reims and its neighbouring communes. In 2015, UNESCO inscribed them as a World Heritage Site — the coteaux, maisons et caves de Champagne — recognising what the winemakers had known for generations: that this subterranean world is as essential to champagne as the Pinot Noir and Chardonnay growing in the vineyards above.
The Women Who Built the Dark
The modern history of the crayères belongs, in remarkable measure, to two women. Barbe-Nicole Ponsardin, who took control of Clicquot's struggling house in 1805 at the age of twenty-seven after her husband's death, expanded the firm's cellars to what would eventually become twenty-four kilometres of galleries. It was in these tunnels that she developed the technique of remuage — riddling — turning each bottle by hand in its pupitre to coax the spent yeast into the neck for disgorging. The method transformed champagne from a cloudy, unpredictable drink into the crystalline marvel we know, and it was conceived in chalk-walled darkness.
Six decades later, Louise Pommery — another young widow who inherited a house and reinvented it — commissioned the most ambitious cellar project in Champagne's history. Beginning in 1868, she connected one hundred and twenty isolated Gallo-Roman chalk pits into a single, navigable network stretching eighteen kilometres beneath the Butte Saint-Nicaise. She commissioned monumental bas-relief carvings on the gallery walls, installed a grand staircase worthy of an opera house, and declared that her champagne would be the first brut — bone-dry, radical, modern. Descending Pommery's staircase today, past Gustave Navlet's enormous chalk sculpture of Silenus reclining with his wine cup, you understand that she was building not merely a cellar but a monument.
A Silence That Works
In the deepest galleries of Ruinart — the oldest established champagne house, founded in 1729 by Nicolas Ruinart on the advice of his uncle, the Benedictine monk Dom Thierry Ruinart — the chef de cave will tell you that the most important ingredient in champagne is time, and the most important condition for time is stillness. Down here, there is no vibration. No light. No seasonal fluctuation. The bottles undergo their second fermentation and their years of ageing sur lie in conditions so stable that the only meaningful variable is the winemaker's decision about when to bring them back to the surface.
I stood in one of Ruinart's oldest galleries last autumn, beside a wall of magnums from 2004, and pressed my palm flat against the chalk. It was cool and faintly damp, powdery at the surface but dense beneath — the compressed memory of an ocean that vanished before mammals existed. Somewhere above me, tourists were photographing the facade of Notre-Dame de Reims, where French kings were crowned for eight centuries. But down here, in the permanent ten-degree dark, a different kind of consecration was taking place: the slow, patient alchemy of sugar and yeast and chalk-filtered air becoming something that would, one day, make a roomful of strangers raise their glasses and believe, however briefly, that the world was worth celebrating.
Returning to the Light
You climb back up those one hundred and sixteen steps with chalk dust on your fingertips and a chill that takes an hour to leave your bones. The city reassembles itself around you — the afternoon light on the cathedral's angel statuary, the brasseries filling for lunch, the faint sweetness of brioche from the boulangerie on Rue de Mars. And you carry with you the knowledge that all of this — the elegance, the celebration, the pop and pour of every bottle of champagne that has ever marked a wedding, a victory, a midnight worth remembering — began in the dark. In silence. In stone that was once the floor of a prehistoric sea. It is, when you think about it, the most improbable and beautiful origin story in all of wine.
