About us
Andes Big Mountain is a group of mountain professionals driven by exploration, learning, and respect for wild environments.
How We Work
Every expedition follows a clear and rigorous process, designed to adapt to conditions, objectives, and the people involved
Local Expertise
UIAGM-certified guides with deep knowledge of each region we operate in.
Nature First
We move responsibly, minimizing impact and respecting mountain ecosystems.
Learn & Grow
Every expedition leaves you stronger, more skilled, and more aware.
Global Experiences
Distinct, high-quality adventures across iconic mountain regions worldwide.
Local Community
We collaborate with and support the people who live in the places we explore.
Our commitment is simple: professionalism, safety, and
respect for the mountains — without compromise.
respect for the mountains — without compromise.
Built by people who care
Our work is powered by a team that values quality, creativity, and collaboration in everything we do.
UIAGM / IFMGA Certified
At Andes Big Mountain, we take the mountains seriously. That is why our lead guides hold the UIAGM / IFMGA International Mountain Guide certification — the highest and most globally recognized standard in professional mountain guiding.
The UIAGM (International Federation of Mountain Guides Associations) certification requires multiple years of rigorous training and assessment in alpine climbing, ski mountaineering, and guiding techniques. It includes advanced risk management, rescue systems, snow and avalanche science, glacier travel, and decision-making under complex mountain conditions.
This qualification is not just a title — it represents competence, judgment, and responsibility at the highest level. When you climb or ski with us, you are guided by professionals trained to operate safely in serious terrain, anywhere in the world.
Explore our tours and prepare for your next challenge
We’ll help you choose the experience that truly fits your goals.
Sebastián Rojas
Founder & Lead UIAGM Guide
International IFMGA / UIAGM Mountain Guide
Sebastian guides internationally on high-altitude expeditions and technical alpine objectives, operating primarily across the Andes, Patagonia, and major international ranges.
Main Areas
Central Andes
Patagonia
Alps
Turkey
Patagonia
Alps
Turkey
Highlights
Cerro Torre
Monte Fitz Roy
Annapurna (8,091 m – new Chilean route)
Broad Peak (8,051 m)
Monte Fitz Roy
Annapurna (8,091 m – new Chilean route)
Broad Peak (8,051 m)
Eduardo Aldunate
Director
Industrial Civil Engineer.Specialized in strategy, project management, business development, digital transformation. Over 15 years leading companies and teams across Latin America & Europe.
Founder and director of multiple ventures in strategic consulting, adventure tourism, and outdoor experiences. Expeditions and audiovisual projects in more than 60 countries, including the Andes, Patagonia, and the Alps.
Pedro Bello
UIAGM Mountain Guide (in training)
Over 10 years in mountain sports. Primary experience in Chile (north and south) and the Alps, based in Chamonix for the past six years.
Former competition climber; currently aiming to redpoint his first 9a and continue growing as a high-mountain guide.
Main Areas
Highlights
Chilean National Climbing Team member
2018 World Championships (Moscow & Innsbruck)
Llullaillaco (6,739 m) and San Pedro (6,110 m)
2018 World Championships (Moscow & Innsbruck)
Llullaillaco (6,739 m) and San Pedro (6,110 m)
Raimundo De Andraca
UIAGM / IFMGA Mountain Guide
High-mountain guide with extensive experience in technical expeditions, ski mountaineering, and glaciated terrain, placing strong emphasis on planning, safety, and decision-making in complex environments.
Main Areas
Central Andes
Patagonia
Alps
Antarctica
Patagonia
Alps
Antarctica
Highlights
Complete Peuterey Integral via the south face of Mont Blanc (4,810 m)
First ascent via the south ridge of Cerro El Brujo (4,460 m)
Ski descent of Denali (6,190 m)
First ascent via the south ridge of Cerro El Brujo (4,460 m)
Ski descent of Denali (6,190 m)
Javier Galleani
UIAGM / IFMGA Mountain Guide
WFR (Wilderness First Responder) | Avalanche REC 2+
Javier is a Patagonia-based mountain guide whose professional foundation has been shaped by the demanding terrain of southern Chile. His main motivation is to explore remote environments and share meaningful mountain experiences with his clients, guiding them safely and professionally toward their personal objectives. The wild and challenging character of Patagonia has been his greatest school and continues to be his primary source of inspiration.
Main Areas
Aysén, Patagonia
Highlights
Romain Houe
UIAGM Mountain Guide (in training)
UF1 UIAGM – Guide de Haute Montagne (France) | From July onward: authorized to guide clients in ski touring and classical alpinism
Romain is passionate about ski mountaineering, especially when skiing blends seamlessly with technical alpine terrain. His practice focuses on the fusion of movement, technique, and mountain environment — where ski touring becomes true alpinism.
Main Areas
Chamonix Mont-Blanc
Surrounding Alpine ranges
Surrounding Alpine ranges
Highlights
Pablo Miranda
UIAGM / IFMGA Mountain Guide
NOLS Instructor
Born and raised in Coyhaique, Patagonia, Pablo developed a deep connection to the outdoors from an early age. He began rock climbing at 15 and steadily expanded his experience into remote alpine terrain.Throughout his career, he has pursued exploration in lesser-known and often undocumented mountain regions, focusing on wild landscapes that remain largely untouched. His expeditions have taken him across multiple mountain ranges throughout the Americas, always driven by curiosity, technical progression, and a strong respect for wilderness.
Main Areas
Coyhaique
Patagonia
Andean Regions
Patagonia
Andean Regions
Highlights
Javier Moraga
UIAGM / IFMGA Mountain Guide
ANGM High Mountain Guide | Wilderness First Responder (WFR) | Avalanche Science Certification – REC 2+
Javier embraces every season equally — whether on skis, rock, ice, or big walls.For him, the mountain is more than a challenge; it is a place of belonging. He prioritizes connection with the wild and the authentic, creating meaningful experiences where safety, commitment, and respect for nature come first.
Main Areas
Aysén
Patagonia
Patagonia
Highlights
First ascent of Cerro Alfil, Northern Patagonian Icefield
First ski descent of the NE face of Cerro Hyades, Northern Patagonian Icefield
Ascent of Cerro Fiero (SW ridge), Northern Patagonian Icefield
First ski descent of the NE face of Cerro Hyades, Northern Patagonian Icefield
Ascent of Cerro Fiero (SW ridge), Northern Patagonian Icefield
Albano Morales
UIAGM Mountain Guide (in training)
UIAGM Aspirant in training at the École Nationale de Ski et d’Alpinisme (ENSA) | Advanced military training in mountain operations, reconnaissance, and rescue.
Former Army officer. Platoon commander in reconnaissance units and, for five years, commander of the Military Aid and Rescue Patrols (PARME) in the Aysén Region, leading operations in remote and high-complexity terrain. Over 10 years of mountain experience. Main regions: Patagonia (Aysén) and the Southern Andes.
Main Areas
Highlights
Diego Saez
UIAGM Mountain Guide (in training)
ITP-1 – Canadian Avalanche Association | Professional Avalanche Rescue Course – Manuel Genswein (Mountain Safety) | Wilderness First Responder (WFR) – Seguridad Vertical
Over 10 years of guiding experience across Patagonia, Ecuador, Antarctica, Japan, Peru, and Bolivia, Diego combines a strong background in rock climbing and ski mountaineering, with a particular passion for technical ski ascents and descents that integrate multiple mountain disciplines.
Main Areas
Highlights
Nicolás Secul
UIAGM / IFMGA Mountain Guide
Avalanche Level 1 & 2 | Certified Rescue Technician
A responsible, approachable, and professional guide focused on safety, adaptability to conditions, and delivering authentic mountain experiences.
Main Areas
Chilean Patagonia (primarily Torres del Paine)
Highlights
Second Chilean ascent of Torre Central
First Chilean ascent of the South Summit of Monte Sarmiento
New route opening on Cashan, Peru (700 m, 6b+, 5,600 m)
First Chilean ascent of the South Summit of Monte Sarmiento
New route opening on Cashan, Peru (700 m, 6b+, 5,600 m)
Cristóbal Señoret
UIAGM / IFMGA Mountain Guide
UIAGM / IFMGA Mountain Guide | Ski Touring
A technical guide and explorer with a deep connection to the mountains, dedicated to sharing authentic experiences in remote environments while combining safety, creativity, and a passion for wild nature.
Main Areas
Chilean Patagonia
Andes Range
Southern Chilean volcanoes
Andes Range
Southern Chilean volcanoes
Highlights
Three ascents of Fitz Roy
Participation in the first Chilean ascent of Cerro Torre (Ferrari Route)
First link-up of the Three Towers of Torres del Paine
Multiple new route openings and first ski descents in Patagonia
Participation in the first Chilean ascent of Cerro Torre (Ferrari Route)
First link-up of the Three Towers of Torres del Paine
Multiple new route openings and first ski descents in Patagonia
Nicolás Valderrama
UIAGM / IFMGA Mountain Guide
Avalanche Safety Training AST 1 & 2 | Wilderness First Responder (WFR)
Nicolás is driven by exploration and the pursuit of new terrain, constantly combining multiple climbing disciplines — rock, ice, mixed, and ski mountaineering.His most recent long expedition lasted one month, entering from the Pacific Ocean to establish and climb a new peak in the ice field.He is known for building strong relationships with his clients, always aiming to create an experience that goes beyond the climb itself.
Main Areas
Cerro Castillo
Northern & Southern Patagonian Ice Fields
Cerro San Lorenzo
Chamonix (France)
Northern & Southern Patagonian Ice Fields
Cerro San Lorenzo
Chamonix (France)
Highlights
Winter ascent and ski descent of Cerro San Lorenzo
First ski descent of the South Face of Monte San Valentín
Winter ascent of the South Face of Monte San Valentín
First ski descent of the South Face of Monte San Valentín
Winter ascent of the South Face of Monte San Valentín
