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
Ore Mountains Valley zone. The western part of the Ore Mountains is home to the two highest peaks of the range: Klínovec, located in the Czech part, with an altitude of and Fichtelberg, the highest mountain of Saxony, Germany, at . The Ore Mountains are part of a larger mountain system and adjoin the Fichtel Mountains to the west and the Elbe Sandstone Mountains to the east. Past the River Elbe, the mountain chain continues as the Lusatian Mountains. While the mountains slope gently away in the northern (German) part, the southern (Czech) slopes are rather steep. The Ore Mountains are oriented