The technique he developed, in the category of electro-photography, enables him to capture on film, non-visible sections of the electromagnetic spectrum. His technique is a development beyond the Kirlian photographic technique and is called Epiphanie. Le Cossec investigated the Earth Energy fields and underground streams around Megalithic stone sites and then measured and photographed their emissions of energy over time. His results were extraordinary. Sacred stone sites emitted pulsations of powerful energy from the Earth that reached up into the atmosphere as high as the magnetosphere.