Trans-en-Provence Case

On January 8, 1981, the witness was working on the upper terrace of his property at Trans-en-Provence when a whistling sound drew his attention. He said he saw a grey circular object descend a few dozen metres away, settle briefly and then rise vertically before vanishing at speed. The GEIPAN summary keeps the sighting short, about 30 to 40 seconds, and describes the object as roughly 2.5 metres across and 1.70 metres high, with no visible flame or smoke.

When the witness approached the spot, he found a circular trace around two metres wide with peripheral marks. The gendarmerie returned the next day, took testimony and collected soil and wild alfalfa samples. GEPAN carried out another round of sampling on February 17, and the materials were then distributed across several laboratories so that different analytical methods could be compared.

What kept the case alive was the technical follow-up. The published synthesis refers to significant soil compression, deposits including iron, iron oxide, phosphates and zinc, dark residues suggestive of combustion, and heating considered notable but below 600 C. The alfalfa analyses also showed alterations that varied with distance from the trace, without yielding a definitive cause. Trans-en-Provence remains important because it joins a single-witness sighting to one of the heaviest laboratory investigations in the French record, yet still ends without a firm identification.