The Harponville Cyclists' Cylinder

At about half past seven on 7 September 1954 two men were cycling to work along communal road 47 between Harponville and Contay in the Somme. The morning was clear and free of fog. In a field some 200 metres from the road they saw a circular shape sitting on the ground and rocking back and forth. Both described a dark cylinder with a slightly domed top and an opening running round its side. They closed to about a hundred metres. The object then rose without a sound, first on a slant for some fifteen metres and then straight up. As it climbed they saw blue-grey smoke escaping from a pipe. The sighting lasted four to five minutes before the thing disappeared into the sky. Frightened, the two men went straight to the gendarmerie.

What is on the record

The archive holds the case file of GEIPAN, the unit of the French space agency CNES that investigates UAP reports. GEIPAN publishes the gendarmerie report with it (PV n°785), and both men's statements sit under that report. The gendarmes searched the field on the same day and found no trace on the ground. One of the pair had seen helicopters before and said this was not one. Nobody else came forward. GEIPAN adds that "la crédibilité des témoins n'est pas mise en cause" (the witnesses' credibility is not in question).

Class D is GEIPAN's category for a phenomenon it investigated and could not explain. It rates this one strange to very strange, with medium to strong consistency. The file lists no ordinary explanation that was tested and set aside. The helicopter was ruled out by the witness himself.

Why it sits where it does

The page grades L0 · SINGLE ACCOUNT. GEIPAN withholds witness identities and its record calls the pair only "deux témoins", so the file carries no identified witness. One government record is the only source the archive holds. The tier measures sourcing, not the quality of the gendarmes' work or GEIPAN's, and it is never a verdict. What rose from the field near Contay is not resolved here.