Fatima in Portugal is the site of the world's largest annual gathering of Christian pilgrims-up to a million each May. It was there that, in 1917. the Virgin Mary appeared to three children and told them of the threat of an atheist Russia spreading its errors and annihilating nations '. Now, in post-revolutionary Portugal, the Fatima pilgrimage is a source of controversy. With the new Portuguese elections coming up, Everyman looks at Fatima-the event which symbolises the clash between two of the world's dominant beliefs - Christianity and Communism.