Trans-en-Provence Case

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The Trans-en-Provence Case is one of the rare cases where an unidentified flying object is claimed to have left physical evidence, in the form of burnt residue from a field. The event took place on January 8, 1981, outside the town of Trans-en-Provence in the French département of Var.[1] It was described in Popular Mechanics as "perhaps the most completely and carefully documented sighting of all time".[2]

Event details[edit]

The case began on January 8, 1981 at 5pm. Renato Nicolaï, a fifty-five year-old farmer,[3] heard a strange whistling sound while performing agricultural work on his property. He then saw a saucer-shaped object about eight feet in diameter land about 50 yards (46 m) away at a lower elevation.[1]

According to the witness, "The device had the shape of two saucers, one inverted on top of the other. It must have measured about 1.5 meters in height. It was the color of lead. This device had a ridge all the way around its circumference. Under the machine I saw two kinds of pieces as it was lifting off. They could be reactors or feet. There were also two other circles which looked like trapdoors. The two reactors, or feet, extended about 20 cm below the body of the machine."[4]

Nicolaï claimed the object took off almost immediately, rising above the treeline and departing to the north east.[4] It left burn marks on the ground where it had sat.[1]

The local gendarmerie were notified of the event the following day by Mr. Nicolaï directly[3] on the advice of his neighbor's wife, Mrs Morin.[5] The gendarmerie proceeded to interview Mr. Nicolaï, take photos of the scene, and collect soil and plant samples from the field. The case was later sent to GEIPAN—or GEPAN (Groupe d'Étude des Phénomènes Aérospatiaux Non-identifiés) as it was known at that time—for review.[5]

Analysis of evidence[edit]

GEPAN analysis noted that the ground had been compressed by a mechanical pressure of about 4 or 5 tons, and heated to between 300° and 600° C. Trace amounts of phosphate and zinc were found in the sample material, and analysis of resident alfalfa near the landing site showed chlorophyll levels between 30 and 50 percent lower than expected.[5]

Impressions and explanations[edit]

Mr. Nicolaï had initially believed the object to be an experimental military device.[3] The close proximity of the site to the Canjuers military base makes such a theory generally plausible.

However, GEPAN's investigation focused on conventional explanations, such as atmospheric or terrain causes of a terrestrial nature. But despite a joint investigation by GEPAN and the gendarmerie which lasted for two years no plausible explanation was found.[5]

Skeptical analysis[edit]

Some French skeptics[6] insist that the GEPAN investigation was flawed, especially the study of the physical trace.[7]

The police report said that the trace, which appeared on an active road, looked like one made by the tire of a car. This explanation was dismissed by GEPAN because of the sole witness saying otherwise. The physical trace shown on the picture is not a perfect circle, in fact there are two more-or-less semicircles crossing over each other. Also, a circular shape does not coincide with the description of the UFO made by Mr. Nikolaï. In a recent interview for French television, Mr. Nikolaï confirmed that there were vehicles passing by on the road at the time of the sighting.

GEPAN came very late on the field, after the French gendarmerie, other ufologists and curious people, so the physical trace could have been altered in its chemical composition by the people walking on it.

See also[edit]


  1. ^ a b c France opens secret UFO files covering 50 years
  2. ^ Wilson, Jim (May 2001). "When UFOs Land". Popular Mechanics 178 (5): 66. 
  3. ^ a b c National Investigations Committee On Aerial Phenomena: UFO Casebook:1981
  4. ^ a b UFO Evidence: Renato Nicolai; Trans en Provence, France
  5. ^ a b c d UFO UFO Case 4: The Trans-en-Provence Case
  6. ^ Rossoni, D., Maillot, E., & Déguillaume, E. (2007). Les ovnis du CNES – 30 ans d’études officielles. (extracts from the book). Critical skeptical investigations of GEPAN's work.
  7. ^ Figuet, M. (Ed.) (1995). L’affaire de Trans-en-Provence. Dompierre-les-Ormes, SERPAN.

External links[edit]