 The first film to depict a geometric crop circle, in this case created by super-intelligent ants, is "Phase IV" in 1974.The film has been cited as a possible inspiration or influence on the pranksters who started this phenomenon.Since the 1960s, there had been a surge of UFOlogists in Wiltshire, and there were rumours of "saucer nests" appearing in the area, but they were never photographed.