Here you see just a part of the glacier's front side which is 5km long extending from one side to the other of the Lago Argentino..
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.
Known worldwide because of its process of fractures, the front of the glacier closes the running of the waters of Brazo Rico when it approaches the coast. This produces a kind of pond where the water goes up 20 meters over the level, creating the filtration that ends up in the fracture; the last time was in March 2004.
But show is never-ending. You can watch the detachment of ice blocks of different sizes from a short distance, hear the roaring they produce, and then watch them turned into wonderful floating icebergs.