The researcher says he made the discovery accidentally while investigating the possible migration patterns of Palaeolithic people.

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According to Huntford, cave drawings suggest that man used skis during the last Ice Age in the Palaeolithic period.

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Dr Paul Pettitt, a senior lecturer in Palaeolithic Archaeology at Sheffield University, has written a narrative to accompany the stamp series.

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This area has a very well preserved collection of human skeletons forming a continuous record of habitation across different archaeological cultures since Palaeolithic times.

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The palaeolithic Socialists joined in the demonstrations, calling for the legislation to be thrown out and claiming that they would revert to retirement at 60 if they won the presidency in 2012.

ECONOMIST: Nicolas Sarkozy