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July 14, 2011
This glacier-fed lake, which caught the eye of the STS-108 crew aboard the Space Shuttle Endeavour, is Lago Argentina, located in Southern Argentina and is part of the Chilean/Argentine national park, Parque Nacional Los Glaciares. The lake level is approximately 700 feet. Two large, Southern Patagonian Ice Field glaciers reach the lake in its northern and southern arms. On the left the Perrito Moreno Glacier almost blocks the southern arm while the Upsala Glacier is spawning small pieces of ice into the northern arm from the right. Note the changes in water color. It is summertime in this scene and melt water from the glaciers tints the water with a fine powdery blend of rock material known as glacial flour.

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