Chunks of Argentina's Perito Moreno Glacier break off

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Chunks of Argentina's Perito Moreno Glacier break off
Chunks of ice break off the Perito Moreno Glacier, in Lake Argentina, at Los Glaciares National Park, near El Calafate, in Argentina's Patagonia region, Thursday, March 10, 2016. The massive natural monument in the province of Santa Cruz periodically advances over the lake, and then breaks off. The glacier last ruptured in March 2012. (AP Photo/Francisco Munoz)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
TOPSHOT - Sequence of images of the collapse of huge masses of ice from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. The most recent rupture was in March 2012 and the one before that was in 2008. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Ice cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
TOPSHOT - An ice bridge cracks from the wall of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 10, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / WALTER DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Mist rises from Lake Argentina, after the Perito Moreno Glacier's ice bridge collapsed into the lake at Los Glaciares National Park, near El Calafate, in Argentina's Patagonia region, Thursday, March 10, 2016. The massive natural monument in the province of Santa Cruz periodically advances over the lake, and then breaks off. The glacier last ruptured in March 2012. (AP Photo/Francisco Munoz)
View of a glacier cave (R) of the Perito Moreno Glacier located at Los Glaciares National Park, southwest Santa Cruz Province, Argentina, on March 9, 2016. With 250 km2 ice formation, and 30 km in length, the Perito Moreno is one of 48 glaciers fed by the Southern Patagonian Ice Field located in the Andes mountain range. AFP PHOTO / Walter DIAZ / AFP / Walter Diaz (Photo credit should read WALTER DIAZ/AFP/Getty Images)
Picture taken at the Serrano Glacier, located in the Bernardo OHiggins National Park in the Chilean Patagonia, about 1,960 km south of Santiago, on February 21, 2016. Patagonia is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, steppes and grasslands east of this southern portion of the Andes. Patagonia has two coasts; a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean. AFP PHOTO / MARTIN BERNETTI / AFP / MARTIN BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)
Picture taken at the Serrano Glacier, located in the Bernardo OHiggins National Park in the Chilean Patagonia, about 1,960 km south of Santiago, on February 21, 2016. Patagonia is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, steppes and grasslands east of this southern portion of the Andes. Patagonia has two coasts; a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean. AFP PHOTO / MARTIN BERNETTI / AFP / MARTIN BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)
Picture of a waterfall at the Serrano Glacier, located in the Bernardo OHiggins National Park in the Chilean Patagonia, about 1,960 km south of Santiago, on February 21, 2016. Patagonia is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, steppes and grasslands east of this southern portion of the Andes. Patagonia has two coasts; a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean. AFP PHOTO / MARTIN BERNETTI / AFP / MARTIN BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)
Picture taken at the Serrano Glacier, located in the Bernardo OHiggins National Park in the Chilean Patagonia, about 1,960 km south of Santiago, on February 21, 2016. Patagonia is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, steppes and grasslands east of this southern portion of the Andes. Patagonia has two coasts; a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean. AFP PHOTO / MARTIN BERNETTI / AFP / MARTIN BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)
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Massive chunks of Argentina's Perito Moreno Glacier, which is known as the "White Giant," collapsed into the water on Thursday as tourists and locals watched from an observation deck.

The Patagonian glacier drops large amounts of ice about every four years. The last rupture was in 2012. Partial breaks occurred in February, indicating a large collapse could happen soon.

The Perito Moreno Glacier is located in Argentina's Glaciers Park in southwest Santa Cruz province.

Watch Glacier Ice Bridge Plunge Into Water

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