The mountain
Location, official height, landforms, climate and why the Andes produce such severe conditions here.
The mountain, not the marketing
Aconcagua, understood before it is climbed
A source-led English-language guide to the mountain’s geography, routes, access, weather, acclimatisation and expedition decisions.
6,960.8 mofficial height reported by Argentina’s IGN
AndesMendoza Province, Argentina
Source-ledclaims separated from operational advice
A mountain has more than one story
Build a complete mental map
Aconcagua is often reduced to a summit number and a “non-technical” label. That is not enough. Altitude, wind, dry conditions, load carrying, approach length and acclimatisation choices shape every expedition.
Routes
Normal Route, Polish Glacier approaches and the difference between a route name and an expedition plan.
Access and permits
Park access, seasonal rules and why current official information must be checked before travel.
Weather and season
Wind, temperature, storms and the limits of long-range summit forecasting.
Acclimatisation
Why speed is not a substitute for adaptation and how itinerary length changes the risk calculation.
Sources and corrections
How we distinguish official measurements, stable mountain facts and season-specific operational details.
How to use this site
Research first, choose later
Use the encyclopedia to understand the mountain before comparing a commercial itinerary. No website can decide whether you are medically or technically ready. A qualified professional needs your recent altitude history, health context and real schedule.
Important
Mountain conditions, park rules, permit systems and rescue arrangements can change. Stable facts are cited; operational details should always be checked against current Argentine authorities and the organiser responsible for your expedition.
Mountain conditions, park rules, permit systems and rescue arrangements can change. Stable facts are cited; operational details should always be checked against current Argentine authorities and the organiser responsible for your expedition.
Planning an actual expedition
Move from research to a suitable format
For current guided programmes, dates and commercial conditions, use Mountain Guide’s canonical Aconcagua hub. This encyclopedia does not duplicate prices or availability.