The greatest battle of 1066: No, not THAT defeat at Hastings but King Harold's blood-soaked rout of a 7ft Viking warlord at Stamford Bridge. Now TV historian Dan Snow reveals how the real site has finally been unearthed after a painstaking search

It was the last great Viking battle, against the greatest Viking invader. On a field in Yorkshire, the Viking age in England came to a decisive end. Two kings clashed. Two of Europe's finest warriors...