Near Chalampé, Haut-Rhin, May 7, 1972, at 09:00 P.M.
Mr. R. Patois, aged 20, accompanied by his older sister, were on a flat ground at a few hundreds of meters of the channel of Alsace, close to Chalampé (Rhone-Poulenc and Pec-Rhin chemicals plants, the atomic power plant of Fessenheim is 12 kilometers down along the channel of Alsace.)
At their North-West, they saw a luminous sphere of which they said resembled an electric bulb, with a very sharp light of white-yellowish color. The sphere moved slowly, went along the same broad circular path several times, then at the end of five minutes of this manoeuver, went up in the clouds layer in direction of the North North-East.
They evaluated the altitude of the sphere as between 600 and 1000 meters, and, noting that the distance appeared difficult to evaluate, estimated it at between 2 and 10 kilometers of them. It should be noted that if the object had been at 14 kilometers of them it would have been located on the famous Bayonne-Vichy line.