An Irish archaeological photographer has discovered a remarkable series of prehistoric carvings at the Grange Stone Circle in Lough Gur, County Limerick.Ken Williams, a leading Irish archaeological photographer, has developed methods of lighting stones so that they can be photographed to maximum effect, allowing him to find a series of carvings over the past few years.Williams was returning to check the stones at Grange Stone Circle as part of his research when he discovered the new carvings.The new carvings are particularly spectacular due to the presence of concentric circles and arcs found on the back and sides of a stone...