First erected some 6000 years ago, the mystery of Stonehenge has cast a spell over the world’s greatest minds ever since. Modern calculations estimate that the three phases of Stonehenge’s construction took more than thirty million hours of labour, the transportation of the masses of colossal rocks across mountains and rivers an almost unbelievable feat for humans in prehistoric times. However, the reasons behind the creation of this ethereal, striking site remain vastly unknown. This monolithic monument’s assembling remains a prehistoric puzzle, it’s mystery a healthy reminder that humankind can’t ever know it all. As one of the Seven Wonders of the World, there’s no doubting Stonehenge’s epic significance for humanity both then and now.