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
Lists of mountains and hills in the British Isles not be considered peaks or mountains under UIAA definitions. With the exception of Pillar Rock, a rocky outcrop on Pillar in the Lake District, the peaks of all of the Nuttalls can be reached without resort to rock climbing. , 302 people are known to have completed the list, though this includes some who did not climb Pillar Rock, which the authors permit. They have also announced that Tinside Rigg and Long Fell (added to the list in 2016) need not be climbed as they are in a restricted area of Warcop Artillery Range. The Wainwrights are mountains or hills