Tournefeuille 1993, grass circle caused by a sprinkler

Summary

In September 1993, a homeowner in Tournefeuille found an 8-meter-diameter circle in their garden with grass uniformly bent outward in a 30-centimeter band. At the center sat an automatic sprinkler nozzle. Days earlier, a severe storm had flooded the grounds and caused electrical disturbances in the irrigation system's fuse. SEPRA investigators determined the nozzle had activated involuntarily, watering without pressure for an extended period, which flattened the grass in the circular pattern. Despite its striking appearance, no signs of non-terrestrial activity were found.