3D laser scan to be taken of Stonehenge

STATE of the art technology is being used to create the most accurate digital model ever of Stonehenge English Heritage is using a combination of modern 3D laser scanning and digital imaging technology to survey every inch of every stone that makes up the prehistoric monument.

The survey includes all the visible faces of the standing and fallen stones of Stonehenge, including Station, Heel and Slaughter stones, as well as the top of the horizontal lintels which have never before been surveyed at this level of detail.

Despite the vast amount of archaeological activity and academic study into Stonehenge and its landscape over the centuries, relatively little is known about the lichen-covered surfaces of the sarsens and bluestones that make up the stone circle.

The availability of high resolution laser scanners that can produce highly accurate surface models means that it is now possible to record details and irregularities on the stone surfaces down to a resolution of 0.5mm. It is also hoped that secrets hidden underneath the thick cover of lichens may be revealed in the analysis using sophisticated software.

The study serves a number of purposes. It will provide precise base-line data to monitor the physical condition of the monument which is subjected to daily weathering.

Digital data of this unprecedented level of detail will also be a valuable resource to anyone who is tasked with producing reconstruction models, drawings and computer generated images of the monument for public understanding and interpretation, including the English Heritage interpretation team who is working on the new displays of the proposed visitor centre.

Understanding of the known Neolithic “dagger” and Bronze Age carvings as well as modern graffiti carvings might also be enhanced, and new ones might be discovered.

Dave Batchelor, English Heritage’s Stonehenge archaeologist, said: “The surfaces of the stones of Stonehenge hold fascinating clues to the past. They are like manuscripts, a whole palimpsest of the ideas, efforts and idiosyncrasies that marked the lives of people over millennia. I look forward very much to seeing what we are about to find.”

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