At approximately 22:30 on the night of September 10, 1954, Marius Dewilde, a 34-year-old steelworker living near the SNCF railway line between Quarouble and Saint-Amand-les-Eaux in northern France, stepped outside his house after hearing his dog bark. What he found on the railway tracks roughly 80 meters from his door would become one of the most thoroughly documented close encounter cases in French history.
Dewilde observed a dark, massive oval object resting directly on the SNCF main line tracks. As he approached with his flashlight, two small figures in what appeared to be diving suits or armored garments were moving in the beam of light, heading toward the craft. Dewilde moved to intercept them. Before he could reach the figures, a beam of intense, greenish light emerged from the craft and struck him squarely. He found he was completely paralyzed — unable to move any part of his body — but remained fully conscious. He watched helplessly as the figures entered the craft, which then rose vertically with a sharp whistling sound and disappeared.
When the paralysis lifted, Dewilde immediately contacted the Valenciennes police. The gendarmerie of Quiévrechain investigated the same night. The following day, the SNCF — the French national railway authority — sent inspectors to examine the tracks. They found five marks on the wooden railway sleepers (ties) consistent with the concentrated pressure of a very heavy object resting on them: the marks showed compression of the wood fibers in a pattern that railway engineers determined corresponded to an object weighing at least 30 tons resting on the track. This physical evidence, documented by official SNCF engineers working for the French state railway company, was reported in the subsequent French Air Ministry investigation.
The Quarouble case was subsequently reviewed by French Air Force investigators and became one of the foundational cases in the 1999 COMETA Report — the study by a group of senior French military and intelligence officials presented to President Chirac and Prime Minister Jospin. The report cited the railway track evidence as a type of corroboration that is particularly resistant to hoax: a single witness could fabricate a story, but manufacturing physical marks on active SNCF main-line track consistent with a 30-ton object, in a way that fooled professional railway engineers, would require resources and access far beyond what a rural steelworker possessed.
Dewilde reported a second encounter on October 10, 1954, and remained consistent in his account across decades of interviews. His subsequent life showed no pattern of attention-seeking, financial exploitation of his fame, or embellishment of the original account.