Imponente ruptura de arco de hielo del glaciar Perito Moreno en Argentina

(COMBO) This combination of pictures shows (L) a view of the arch of ice formed between the Perito Moreno glacier and the shore of Argentino lake on March 11, 2018 and the gap left after the arch collapsed into the water overnight on March 12, 2018, at Parque Nacional Los Glaciares near El Calafate, in the Argentine province of Santa Cruz. A natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch and then collapses. / AFP / WALTER DIAZ

Tourist watch pieces of ice falling from the Perito Moreno glacier, at Parque Nacional Los Glaciares near El Calafate, in the Argentine province of Santa Cruz, on March 12, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake collapsed into the water overnight. A natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch and then collapses. / AFP / WALTER DIAZ

A rainbow is seen over the Perito Moreno glacier at Parque Nacional Los Glaciares near El Calafate, in the Argentine province of Santa Cruz, on March 12, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake collapsed into the water overnight. A natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / WALTER DIAZ

View at the Perito Moreno Glacier, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 11, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / Walter Diaz

A ferry sails nearby the Perito Moreno Glacier, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 11, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / Walter Diaz

TOPSHOT – View of an arch the Perito Moreno Glacier, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 11, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / Walter Diaz

Chuncks of ice come off from the Perito Moreno Glacier, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 11, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / WALTER DIAZ

TOPSHOT – View of the gap left after an arch of ice formed between the Perito Moreno glacier and the shore of Argentino lake collapsed overnight, at Parque Nacional Los Glaciares near El Calafate, in the Argentine province of Santa Cruz, on March 12, 2018. A natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch and then collapses. / AFP / WALTER DIAZ

TOPSHOT – Tourists etake snapshots at the Perito Moreno Glacier, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 11, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / WALTER DIAZ

A chimango, a bird of prey, is seen with the Perito Moreno Glacier at the back, at Los Glaciares National Park, near El Calafate in the Argentine province of Santa Cruz, on March 10, 2018. An arch of ice formed at the tip of the Perito Moreno, between the glacier and the shore of Argentino lake, started collapsing into the water on Saturday, a natural display that happens just once every several years. Such arches form roughly every two to four years, when the glacier forms a dam of ice that cuts off the flow of water around it into the lake — until the water breaks through, opening up a steadily wider tunnel that eventually becomes a narrow arch… and then collapses. / AFP / WALTER DIAZ