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
Neacola Mountains Neacola Mountains The Neacola Mountains are the northernmost subrange of the Aleutian Range in the U.S. state of Alaska. The range is named for the Neacola River which bounds it to the north and drains the highest and most rugged peaks of the group. They are bordered on the southeast by the Chigmit Mountains, another subrange of the Aleutian Range, on the northeast by the Tordrillo Mountains, and on the west and southwest by the lakes and lowlands of Lake Clark National Park and Preserve. The highest peak is Mount Neacola (also known as "Neacola Peak"), 9,426 feet (2,873 m)