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Nature 434, 1079 (28 April 2005) | doi:10.1038/4341079a; Published online 27 April 2005
100 and 50 years ago
The water-supply for the occupants of our huge prehistoric "camps" has always been somewhat of a mystery, and it has been suggested that they were only temporary refuges... But the watering of men and animals on the scale indicated by the areas enclosed would be a formidable task even for a day, and other explanations must be sought. The late General Pitt-Rivers, for example, held that the water-level of the combes was higher then than now, and streams would have been plentiful on the slopes; but, feeling the inadequacy of this view, he also had recourse to the dew-pond theory... An exposed position innocent of springs was selected, and straw or some other non-conductor of heat spread over the hollowed surface.
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