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Marmolejo: A Glacial Baptism on the World’s Southernmost 6,000-meter Peak

October 31 , 2025 | NewsMarmolejo

Panoramic view of the Cerro Marmolejo glacier with mountaineers ascending.
The imposing glacier of Cerro Marmolejo, the world’s southernmost 6,000-meter peak.

There is a giant that silently watches over the central valley, a colossus hidden in plain sight in the heart of the Cajón del Maipo. It is Cerro Marmolejo (6,108 m), and it holds a unique title: it is the southernmost 6,000-meter peak on the planet. Climbing it is not a weekend trek; it is an expedition in its purest form, a journey into a realm of ice that demands the mettle and spirit of a true mountaineer. For many, it is the rite of passage that separates the high-altitude hiker from the glacier expedition member.

The Approach: A Journey into the Wild

The conquest of Marmolejo begins long before you touch the snow. Its approach is an adventure in itself, a long pilgrimage through remote valleys that immerses you in the wildest heart of the Central Andes. This journey, often requiring the crossing of powerful rivers and the support of mules to transport gear, is a natural filter that demands commitment and dedication. Day by day, civilization becomes a memory as we establish camps in landscapes of breathtaking solitude.

Roped-up mountaineers moving across the crevassed glacier of Marmolejo.
Navigating Marmolejo’s sea of ice.

The Ice Kingdom: Where a Mountaineer is Forged

It is upon reaching high camp that Marmolejo reveals its true identity. The final ascent unfolds over its enormous, crevassed glacier—a sea of ice that defines the mountain’s character. This is where high-altitude trekking transforms into technical mountaineering. The expedition demands mastery of crampons and ice axe, and roped-up travel becomes essential to safely navigate the glacial terrain.

A Summit at the Edge of the World

Marmolejo’s summit day is legendary for its demands. It is an endurance marathon that begins in darkness and tests physical and mental strength to the very last meter. The reward for this perseverance is one of the most extraordinary views in the Andes. From its summit, the gaze is lost in a 360-degree horizon: to the north, the silhouette of Aconcagua is visible; to the south, the Andes unfold into an infinity of virgin peaks, marking the beginning of Patagonia. The feeling is that of standing on the balcony at the end of the world.

360-degree view from the summit of Cerro Marmolejo, with the Andes mountain range extending in all directions.
The reward: a view from the balcony at the end of the world.

The HME Seal: Your Glacier Expedition School

We consider Marmolejo the perfect “graduation exam” for the mountaineer looking to take the next step. It’s the ideal introduction to large-scale expeditions that combine altitude, complex logistics, and the technical component of glacier travel. At HME, we don’t just guide you; we teach you. Our guides are instructors who ensure every team member feels safe and competent in the use of gear and glacier techniques. We manage the complex approach logistics so you can focus your energy where it matters most: on the ice giant waiting above.

The world’s southernmost 6,000-meter peak does not give up its summit easily. It demands preparation, respect for the power of ice, and the heart of a true expedition member.

Cerro Marmolejo Expedition (6,108 m)

The guardian of the Cajón del Maipo is waiting. If you are ready to evolve from high-altitude trekking to expedition mountaineering and learn the secrets of the ice, this is your challenge.

Explore the Expedition

Any questions? Contact us at [email protected]