WE ARE
WILD YAK
WILD YAK EXPEDITIONS
ABOUT US –
In the world’s highest mountains, there is little room for shortcuts or impatience. What matters is the right organisation, judgment and experience. And the discipline to make the right decision when conditions are uncertain.
We founded WILD YAK EXPEDITIONS after decades of guiding and operating in the Alps and the Himalaya. Our background shapes everything we do—from how we plan journeys to how we lead teams at altitude. We approach the mountains with restraint, preparation, and respect, knowing that responsibility matters more than recognition.
Our expeditions and treks are built around ultra-small, carefully structured groups (4 to 6 participants), clear safety margins, and disciplined systems. Every detail is planned with purpose: acclimatisation, pacing, logistics, and leadership. By managing complexity with precision, we allow our clients to focus on what truly matters—the experience of moving through the mountains with confidence and clarity.
WILD YAK EXPEDITIONS was founded on a shared philosophy across Switzerland and Nepal. This continuity ensures aligned decision-making, consistent standards, and calm leadership when conditions demand patience and sound judgment. We do not rely on improvisation or volume-driven thinking. We rely on our responsibility and experience.
We believe exceptional mountain journeys should feel restorative, not stressful. Time at altitude should offer space to disconnect from daily pressure, reconnect with nature, and move with ease and intention. Our goal is not to push for speed or numbers, but to create journeys that renew energy, strength, and perspective.
Responsible travel is central to who we are. We work through long-term, fair partnerships with local professionals, respect local culture, and actively limit our impact on fragile high-altitude environments. Sustainability is not a message we promote—it is a standard we live by in how we operate, guide, and lead.
WILD YAK EXPEDITIONS is for those who value depth over crowds, precision over display, and trust over promises. We approach the mountains not to conquer them quickly, but to engage with them carefully, professionally, and with lasting respect.
Where the Alps Meet the Himalaya
WILD YAK EXPEDITIONS is shaped by two founders whose experience defines our standards.
Andrea Sherpa Zimmermann brings Alpine discipline and elite athletic precision into the Himalayas. As the ninth Swiss woman to summit Mount Everest and a climber of multiple 8,000-meter peaks, she embodies discipline, endurance, and mental resilience. A former member of the Swiss Ski Mountaineering Team and a winner of the Patrouille des Glaciers and the CCC of the Ultra-Trail du Mont-Blanc, she shapes how our journeys are designed, structured, prepared, and performance-driven at altitude.
Alongside her stands Norbu Sherpa, whose seven summits of Mount Everest and more than eighteen ascents of different 8,000-meter peaks represent decades of leadership at the highest level of Himalayan climbing. He has personally led more than 100 climbers to the summit of Everest and other 8000-meter peaks. His experience brings grounded judgment, restraint, and responsibility—values earned through a lifetime spent living and leading in extreme environments.
Together, this meeting of Alpine systems and Himalayan heritage creates something distinct. Our expeditions and treks are designed around your safety, focus, and experience: ultra small teams of four to six participants, precise acclimatisation, uncompromising logistics, and decisions guided by years of experience.
The result is a refined and responsible way to explore the world’s highest places and mountains, where professionalism, heritage, and care come together in the client’s best interest.
