There is one unavoidable, unpredictable and slightly frustrating issue with mountain climbing - the weather. As was ably demonstrated when we went up the Nevado de Toluca, it is often foggy. But unlike beach holidays, you can't really check the weather forecast and change plans on the fly. Mountains make their own climate, that can be pretty independent of the world around it, as you can see from the photo below. You just have to cross your fingers that it clears up when you summit!
