No other north-south straight tine goes through so many significant ancient sites as the Great North Line. When Robert Twigger stumbled across this phenomenon, he set himself the challenge of being the first person to walk the entire route. From Christchurch on the South Coast to Old Sarum to Stonehenge, to Notgrove Long Barrow and to Meon Hill in the Midlands, to Ilkley in Yorkshire and its Swastika Stone, all the way on to Lindisfarne. With a heart...