Andes

   Spreading across countries Argentina, Bolivia, Chile, Colombia, Ecuador, Peru and Venezuela, Andes is the world's longest continental mountain range. In length wise, the Andes is split into several ranges, which are separated by intermediate depressions. It is a continual range of highlands along the western coast of South America. This range is about 7,000 km long, about 200 km to 700 km wide and of an average height of about 4,000 m. Its highest peak, Mt. Aconcagua, rises to an elevation of about 6,962 m above sea level. The peak of Mt. Chimborazo in the Ecuadorean Andes is farther from the centre of the Earth than any other location on the Earth's surface. This is because of the equatorial bulge that results from the Earth's rotation. The world's highest volcanoes are in the Andes, including Ojos del Salado on the Chile-Argentina frontier which rises to 6,893 m  and over 50 other volcanoes that rise above 6,000 m.

The Andes can be divided into three sections as the Southern Andes in Argentina and Chile, the Central Andes including the Chilean and Peruvian cordilleras and parts of Bolivia and the Northern Andes in Venezuela, Colombia, and Ecuador that consists of two parallel ranges, the Cordillera Occidental and the Cordillera Oriental. In Colombia, north of its the border with Ecuador, the Andes split in three parallel ranges, the western, central, and eastern ranges. The eastern range of Colombia is the only one that extends to Venezuela. In the northern part of the Andes, the isolated Sierra Nevada de Santa Marta range is often considered to be part of the Andes.

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Perito Moreno Glacier

This can be called one of the most important tourist attractions in the Argentine Patagonia located in the Los Glaciares National Park in the south west of Santa Cruz province, Argentina. The 250 km2 (97 sq mi) ice formation, and 30 km (19 mi) in length, is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system shared with Chile. This ice field is supposed to be the world's third largest reserve of fresh water. This is one of the three Patagonian glaciers that is growing and Theterminus of the Perito Moreno Glacier is 5 kilometres (3 mi) wide, with an average height of 74 m (240 ft) above the surface of the water of Lake Argentino, in Argentina. It has a total ice depth of 170 metres (558 ft).

The glacier first ruptured in 1917, taking with it an ancient forest of arrayán (Luma apiculata) trees. The last rupture occurred in July 2008, and previously in 2006, 2004, 1988, 1984, 1980, 1977, 1975, 1972, 1970, 1966, 1963, 1960, 1956, 1953, 1952, 1947, 1940, 1934 and 1917. Periodically the glacier advances over the L-shaped "Lago Argentino" ("Argentine Lake") forming a natural dam which separates the two halves of the lake when it reaches the opposite shore. The water-level on the Brazo Rico side of the lake can rise by up to 30 meters above the level of the main lake. The enormous pressure produced by the height of the dammed water finally breaks the ice barrier holding it back, in a spectacular rupture event. 

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