The vast field of Salisbury Plain in Wiltshire, southern England, is a stretch of verdant land steeped in history. It's here where the ancient neolithic site of Stonehenge sits, an inscrutable pile of rocks wrapped in mystery. And it's here, or at least in the town of Warminster, where some of the U.K.'s most impassioned UFO watchers gather atop nearby Cradle Hill in the belief that they can signal extraterrestrial spaceships. In the 60s and 70s, local journalist Arthur Shuttlewood popularized The Warminster Mystery, leading to hundreds, perhaps thousands of independent claims of UFO sightings all coming from this small town. It's clearly led to many hoaxes, including the recent drawing of elaborate geometric crop circles in fields surrounding the old town.