The Crystal Flutings: Casimiro Ferrari and the 1975 Alpamayo Masterpiece

The Ice Pyramid of the Tropics

Tucked away in the northern reaches of Peru’s Cordillera Blanca stands Nevado Alpamayo, a breathtaking 5,947-metre spire whose architectural symmetry seems almost unnatural. When viewed from the high pass of Punta Unión or the slopes of Santa Cruz, Alpamayo presents a sheer trapezoidal wall of glittering white ice, corrugated with delicate vertical flutings that resemble the pipes of a celestial cathedral organ. In 1966, a survey conducted by UNESCO and the German magazine Alpinismus voted Alpamayo the “Most Beautiful Mountain in the World.”

Yet behind its ethereal elegance lay severe alpine danger. While German climbers had reached the northern summit ridge in 1957 via a circuitous route, the magnificent 450-metre direct Southwest Face remained untamed. Its sustained sixty- to eighty-degree ice flutings were guarded by an enormous, gaping bergschrund at the base and crowned by fragile, overhanging snow cornices along the summit crest.

Fresh from his historic victory on Cerro Torre in Patagonia, Casimiro Ferrari felt an irresistible pull toward the Cordillera Blanca. In June 1975, Ferrari returned to South America with a seasoned team from the Ragni di Lecco: Danilo Borgonovo, Angelo Zoia, and Pinuccio Castelnuovo.

Establishing the High Col Camp

The expedition journeyed up the lush, turquoise-lake-filled Quebrada Santa Cruz, accompanied by local Quechua muleteers. Leaving the valley floor, the climbers established base camp at 4,300 metres beside the moraine of the Arhuaycocha glacier.

From base camp, the Italians faced a grueling haul across glaciated terrain to establish their assault base. Clambering up loose moraine slopes and navigating a chaotic icefall between Alpamayo and neighboring Quitaraju, they pitched two sturdy nylon tents in a high glacial col at 5,400 metres.

From this windswept perch, the Southwest Face soared directly overhead: a gleaming, sheer wall of hard white ice split by deep, corrugated runnels. Ferrari studied the face for days, observing the sunlight patterns and noting that afternoon solar radiation could trigger devastating ice avalanches down the flutings. To succeed, the team would have to strike swiftly in the bitter cold of the early morning.

Front-Pointing into the Sky

At 2:00 AM on June 23, 1975, beneath an ocean of stars in the crisp Andean winter, Ferrari and his companions stepped across the frozen glacier. The cold was biting, freezing the snow into a bullet-hard crust that supported their weight.

Reaching the base of the wall, they encountered the first major hurdle: a gaping bergschrund ten metres wide. Ferrari traversed delicately along the lower lip, locating an unstable snow bridge suspended over the black abyss. Creeping across on all fours with ice axes held ready, he reached the vertical ice slope above and placed two tubular ice screws into solid ice.

Above the bergschrund, the climb became a pure test of calf-burning endurance. Moving up the central fluting, the four climbers front-pointed pitch after pitch on sustained sixty- to seventy-degree ice. Unlike brittle alpine winter ice, tropical Andean ice possessed a dense, plastic consistency that gripped crampon points tenaciously, yet demanded intense physical strength to drive ice axes firmly into the runnels.

Overcoming the Cornice

As morning sunlight illuminated the surrounding peaks of Huascarán, Huandoy, and Chopicalqui, the climbers reached the terrifying crux: the summit headwall. Here, the slope steepened to nearly eighty degrees directly beneath a massive, overhanging rime cornice that hung out into space.

Ferrari took the lead. Chopping delicate belay stances and placing ice screws into blue ice beneath the overhang, he methodically hacked an escape notch through the fragile rime wall. Small avalanches of ice crystals poured down over his shoulders and into the faces of his belayers.

With a final, desperate heave of his ice axes, Ferrari pulled his torso over the rim and surfaced onto the razor-thin summit ridge. One by one, Borgonovo, Zoia, and Castelnuovo joined him on the narrow snow crest.

The Benchmark of Andean Ice Climbing

The first ascent of the Southwest Face of Alpamayo was hailed as an instant classic of international mountaineering. Ferrari and his companions had climbed the face with impeccable speed, style, and safety, proving that the steepest tropical ice faces could be conquered without heavy siege equipment.

Today, the Ferrari Route remains revered by alpine climbers across the globe as the quintessential ice climb of the Andes—a peerless journey up the frozen flutings of Earth’s most beautiful mountain.