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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