05/03/2012 01:43 pm ET

The Sublime Beauty Of Patagonia's Perito Moreno Glacier

Dark clouds hang dramatically in the sky, contrasting with soaring white cliffs streaked with deep blue and rising high above a turquoise lake. The smell of ice hangs in the air, as does the creaking, rolling sound of ice on the move. Occasionally that sound rises to a crashing boom as huge chunks break off and hit the lake's surface.

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