Stonehenge is one of the wonders of the world, a symbol of ancient achievement and a testament to the skills of our distant ancestors. It remains a place of great mystery and a place of haunting beauty. It is unique amongst Neolithic monuments; there is nothing like it anywhere else in the world. Today, nearly a million people a year come to brooding, wind-swept Salisbury Plain and marvel at the henge's great age, the size and arrangement of its iconic...