If you are on excursion there probably first you will go through the Patagonia valley with its natural environment of species such as guanacos, ostriches, foxes, etc. Afterwards you will enjoy many interesting spots: Cerro Comision o De Los Elefantes, river Centinela, Cerro Frias (guanacos site), many Patagonian farmhouses and, across the Mitre river you will get into National Park Los Glaciares. Then, you will go 35 km along the coast of of Lake Argentino’s Rico Branch, among vegetation of incredible trees such as nires, lengas, notros and cherry trees and at Curva de Los Suspiros you will get the first panoramic view of Glacier Perito Moreno.
An ice cloak, or glacial cap, covers this Protected Area of 600,000 hectares. Among the 356 glaciers, the Perito Moreno is the most outstanding one, having a front of 5 km long and a height of over 60 meters above the level of the water. The 250 square km ice formation, of 30 km in length, is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes system shared with Chile. This icefield is the world’s third largest reserve of fresh water.
The Perito Moreno Glacier is one of only three Patagonian glaciers that are not retreating. 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. With no escape route, 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 this mass of waters finally breaks the ice barrier holding it back, in a spectacular rupture event. This dam/rupture cycle is not regular and it naturally recurs at any frequency between once a year to less than once a decade.
The terminus of the Perito Moreno Glacier is 5 km wide, with an average height of 60 meters above the surface of the water, with a total ice depth of 170 meters. It advances at a speed of up to 2 m per day (around 700 m per year), although it loses mass at approximately the same rate, meaning that aside from small variations, its terminus has not advanced or receded in the past 90 years. At its deepest part, the glacier has a depth of approximately 700 m.
The Perito Moreno glacier, located 78 km from El Calafate, was named after the explorer Francisco Moreno, a pioneer who studied the region in the 19th century and played a major role in defending the territory of Argentina in the conflict surrounding the international border dispute with Chile.
Below you can view really astonishing picture of Perito Moreno’s beauty.
Google Earth Placemark – Perito Moreno Glacier
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