0:21
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Friction from snow and ice (5).
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0:37
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Friction from snow and ice (4).
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0:39
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Friction from snow and ice (3).
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0:27
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Friction from snow and ice (2).
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0:31
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Friction from snow and ice (1).
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0:34
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Sorting through pottery shards - long series, debris,
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