One Man, Three Peaks, No Support: A Winter Trilogy Ends
A lighter-than-expected bivy night on Midi d’Ossau. Photo: Charles Dubouloz
Swiss alpinist Charles Dubouloz has completed a remarkable solo winter trilogy in the Pyrenees, linking the range’s three highest summits in a single self-supported traverse that pushes the limits of solo alpinism.
Dubouloz’s route took him over Aneto, Pico Posets, and Vignemale, summits that are among the most demanding objectives in the Pyrenees. In his latest journey, he climbed, skied, and navigated between the peaks without any resupply or outside support, relying entirely on his own routefinding, winter mountaineering skills, and endurance.
Trilogy defined by self-support and winter conditions
This achievement completes a trilogy of major solo winter challenges for Dubouloz, each distinguished by remote ridge lines, complex terrain, and extended periods of isolation. While the Pyrenees are not as high as major alpine ranges, winter conditions there can be severe, with deep snow, avalanche hazards, and unpredictable weather that demand top-level skill and judgment.
The sequence of three peaks requires not only technical climbing and ski skills but also careful planning of food, gear, and routes through avalanche-prone valleys and glacial terrain. Dubouloz’s solo approach -no partners, no external caches, no resupplies – places this traverse in the category of self-reliant high-commitment objectives rarely attempted and even more rarely completed in winter.
Aneto to Posets to Vignemale
- Aneto (3,404m) sits at the Pyrenees’ highest point and is often the most straightforward of the three in summer conditions, but in winter becomes a glaciated, cold, and serious objective.
- Pico Posets (3,375m), the second highest, presents steeper mixed terrain and more complex winter route choices.
- Vignemale (3,298m) rounds out the trio with sustained ridges and serious alpine exposure.
The order and connection of these peaks in a single winter objective underscore Dubouloz’s ambition to push the range beyond traditional circumnavigations or single-summit attempts.
A solo journey through winter alpine terrain
Throughout the traverse, Dubouloz confronted the classic challenges of solo winter alpinism: deep snow travel, navigation between remote cols and ridges, avalanche exposure, wind-scoured terrain, and the mental strain of long days alone in the mountains. Successfully linking these high summits without resupplies reflects a high degree of self-sufficiency and risk management.
Dubouloz’s achievement adds to a growing body of winter solo traverses that expand the boundaries of what is possible in mountain travel without assistance, particularly in ranges shaped by deep winter snow and mixed alpine terrain.
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