You can find them here and there, scattered across England: the small green mounds, the hillocks and filled-in ditches, the hints of straight lines that once cut through the landscape. Just beneath the long grass lies the rich silt, piled up by the wind or washed in by the rain in the 62 years since the coronation of Queen Elizabeth I I. In the 177 years since Victoria took the throne. The 949 years since a determined William of Normandy landed on the English shore. The 1,418 years since St. Augustine came to Canterbury, a prayer book in his hand.