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Nine-year-old scales Aconcagua peak in Argentina

28 December 2013 Last updated at 04:54 GMT

A nine-year-old boy from the United States has become the youngest person to reach the summit of Aconcagua, the highest mountain in the Americas.

Tyler Armstrong climbed the mountain, in the Argentine Andes, with his father and Tibetan sherpa Lhawang Dhondup.

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