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Stonehenge. The structural engineering of Stonehenge November 2009. Built between 3100 – 1100 BCE Sophisticated mathematical and geometrical knowledge Bluestones and Sarsen stones - 240 miles away Thirty million hours of labor Nine hundred stone rings exist in the British Isles. Facts.
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Stonehenge The structural engineering of Stonehenge November 2009
Built between 3100 – 1100 BCE • Sophisticated mathematical and geometrical knowledge • Bluestones and Sarsen stones - 240 miles away • Thirty million hours of labor • Nine hundred stone rings exist in the British Isles Facts
circular enclosure outlined by two banks and a ditch with an entrance to the northeast • a standing stone a bit away from the entrance • outer circle was made from earth was 380 ft in dia, 8 ft wide, and 2 or 3 ft high. Design and Construction
Sarsen stone found 20 miles away • heel stone leans inward toward the circle at an angle of about 30 degrees from the perpendicular • believed that the stone was once standing straight. Design and Construction
http://video.nationalgeographic.com/video/player/news/culture-places-news/stonehenge-village-vin.htmlhttp://video.nationalgeographic.com/video/player/news/culture-places-news/stonehenge-village-vin.html Stonehenge Builders Village Video