Cordillera the cordilleras in Ecuador, Peru, Bolivia, Chile, and Argentina. Mountain ranges of this type have a complex structure, usually the result of folding and faulting accompanied by volcanic activity. In South America the ranges include numerous volcanic peaks. (Though not itself a volcano, Argentina's Mt. Aconcagua, at 22,834 feet (6,960 metres) high, is the highest point in the Western Hemisphere. The Andes cordillera has Ojos del Salado, the highest active volcano in the world, and second highest point in the Western Hemisphere. A number of the volcanoes have been active in historic times. Aside from the volcanic peaks, the crests
Hagen Mountains Hagen Mountains The Hagen Mountains () are a subrange of the Berchtesgaden Alps. They lie mainly in the Austrian state of Salzburg, the western quarter is in the Bavarian county of Berchtesgadener Land. The steep western flanks of the Hagen lie in Bavaria and drop in height to the basin of the Berchtesgadener Königssee. The mountain range has an area of about 12 kilometres by 10 kilometres. Its highest peaks are located at its perimeter, its interior peaks being slightly lower. The two highest summits are the Großes Teufelshorn () south of the Röth and Kahlersberg (). The Hagen mountains