The Tre Cime di Lavaredo — Drei Zinnen, or "Three Peaks," in German — are three vertical dolomite towers that rise straight out of the alpine meadows at the heart of the Italian Dolomites. Their overhanging north walls, hundreds of metres of pale rock, are among the most storied climbing faces in the Alps. The tallest tower, Cima Grande, reaches 2,999 metres, flanked by Cima Ovest and Cima Piccola, and all three are cut from dolomite laid down as a coral reef in a tropical sea some 250 million years ago, then lifted high and eroded into these blades. Paul Grohmann first reached the summit of Cima Grande in 1869, but it was the sheer north face — long thought impossible — that made the peaks legendary among climbers. Today the towers are the emblem of the UNESCO-listed Dolomites, inscribed in 2009, and they once marked the border between Italy and Austria-Hungary, whose First World War front ran right past their feet.
The classic way to take them in is the trail that loops the whole massif, roughly ten kilometres that reveal a new profile at every turn — three separate blades from one side, a single unbroken wall from the next. Most walkers set off from Rifugio Auronzo and circle past Rifugio Locatelli, the hut that sits opposite the three sheer north faces. Reaching Auronzo now means a toll road up the mountain, restricted and booked ahead through the busy summer, when the car park fills before dawn. The path is usually clear of snow only from about June to October; through the long winter the towers belong to the cold and the ski-tourers.