Navacelles 2015, mysterious aircraft contrails

Summary

On May 6, 2015, a witness in Navacelles (Gard, France) observed unusual streaks in the sky and took several photos. Although the case initially appears strange, investigators concluded that these were persistent contrails from commercial aircraft. The sunlight at sunset and the viewing angle made the contrails appear more unusual than they were. Despite the detailed and image-supported testimony, only one witness is involved. The case was classified as "A", indicating a certain observation of aircraft contrails.