Juris Zarins, who worked in the early days of archaeology in Saudi Arabia and found tethering stones dating back to the Neolithic period, claims that the site is within an archaeological hot bed.

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Adria's attempt to explain it Thursday involved much arm-waving and diagram-scrawling, as he described a multipronged structure that will encompass a history of cuisine ranging "from the Big Bang to the Neolithic period" and beyond, taking in the origins of human life.

NPR: Ferran Adria Brings ElBulli Exhibition To London

It is understood the enclosure was built during the early Neolithic period (3800 BC to 3600 BC).

BBC: Truro experts uncover '6000-year-old' causeway

Nevertheless, stone circles and henges do appear to be connected parts of a tradition that developed in Britain from around 3000 to 2000 BC - in other words, during the later Neolithic period (when agriculture began here) and moving into the earlier Bronze Age (when we see the first use of metals, from about 2400 BC).

BBC: Discovering Britain��s prehistoric stone circles