The Andes Mountains travel the western side of South America. Unlike many other mountain ranges of their altitude, the Andes do support human life on their high altitude slopes. Modern life is slowly making its way to the high altitude Andes, but the natives for the most part continue with the traditional ways of their ancestors, growing limited crops such as beans and potatoes - where the crop originated - raising sheep and pigs, and living in crude huts. The llama is the most useful of their w...