These holy places and the nearby Neolithic sites are an incomparable testimony to prehistoric times.

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The Highland Historic Environment Record holds records on thousands of historical sites dating from prehistoric times to the modern day.

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"There's probably a wealth of material in there charting the entire history of Gloucester, possibly even from prehistoric times, " he said.

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The most popular video during the period was for The Year One, a stoner comedy about prehistoric times, starring Jack Black and Michael Cera.

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Even now, most of the company's products are up-to-date twists on technology that has been around since prehistoric times: the wheel and shaping metal into useful forms.

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Like surfers who have been waiting for the big wave, the spacecraft are riding to the red planet as Mars and Earth make their nearest pass to each other since prehistoric times.

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Practiced by humans since prehistoric times using wooden ski-shaped contraptions, cross-country skiing was popularised as a sport by the Norwegian military in the mid-1700s and was first imported to North America by Scandinavian immigrants in the 1850s.

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It has even been suggested that the link may hark back to prehistoric times, when humans stored up on fat during the summer months when food was plentiful and they slept less as a result of the shorter nights.

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In her mind, she holds an alternative map of the centre of the city: one which, instead of modern buildings and highways crowded with traffic, has ancient walls, baths and residences dating back to Roman, Hellenistic and even prehistoric times.

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