It's one of the great wonders of the ancient world: the magnificent tomb of Pharaoh Seti I, the most elaborate and beautifully decorated in Egypt's Valley of the Kings near Luxor. And in an extraordinary feat of modern technology, a specialist art company, Factum Arte, has begun a five-year project to 3D-print a perfect copy of it. The eventual aim is to install it in Egypt on a site not far from the original.

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