A lantern man is an atmospheric ghost light, in the folklore of The Fens of East Anglia, seen around Wicken Fen and other areas. According to the stories, first collected by folklorist L.F. Newman, the lights, believed to be evil spirits trying to draw victims to their death in the reed beds, were drawn to the sound of whistling and could be evaded by lying face down on the ground with your mouth in the mud. The phenomenon, which seems to be a variation of will-o'-the-wisp folklore, is now dismissed as the result of combustible marsh gas.