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Colourful pink sky at dawn above Fenetre Lake / Lac de Fenetre in Swiss Alps, 2456 m above sea level. Mont Blanc, Grande Jorasses, Aiguille du Talefre, Aiguille du Triolet and Mont Dolent in Ferret Valley (Val Ferret) beyond. Canton of Valais, Switzerland. September 2012.. (KEYSTONE/NATURE PICTURE LIBRARY/ANDY TROWBRIDGE)