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ALSACAT is my comprehensive catalog of UFO sighting reports in Alsace, the region is the North-East of France, whether they are "explained" or "unexplained".

The ALSACAT catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file. A general index and thematic sub-catalogs give access to these Alsatian case files.

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Case of La Vancelle, on August 25, 1986:

Case number:



The ufology bulletin La Ligne Bleue Survolée?, of the Cercle Vosgien Lumières Dans La Nuit, in their issue 18 of 1987, noted in a catalog of cases from the East of the France, that in La Vancelle, in the Bas-Rhin, on August 25, 1986 around 11:30 p.m., a person leaving a restaurant had witnessed "the evolution of a shiny ball" which joined a stationary point of light in the sky "above" the wood of Ste Hippolyte... "then the whole thing disappears in place. No noise, no effect."

The bulletin gave no source, but categorized the sighting as a hoax.


Temporal data:

Date: August 25, 1986
Time: 11:30 p.m.
Duration: ?
First known report date: 1987
Reporting delay: 1 year.

Geographical data:

Department: Bas-Rhin
City: La Vancelle.
Place: ?
Latitude: 48.285
Longitude: 7.303
Uncertainty ratio: 4 km.

Witnesses data:

Number of alleged witnesses: 1
Number of known witnesses: ?
Number of named witnesses: 0
Witness(es) ages: ?
Witness(es) types: ?

Ufology data:

Reporting channel: Uufology bulletin "La Ligne Bleue Survolée?"
Type of location: ?
Visibility conditions: Night.
UFO observed: Yes.
UFO arrival observed: ?
UFO departure observed: Yes.
Entities: No.
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: NL




Ref. F/96/67860825 (01)

LA VANCELLE (67) - about 11:30 p.m. (LT) - AQugust 25, 1986 -

A person leaving a restaurant witnessed the evolution of a shiny ball which joined a dot of light hovering in the sky "above" the wood of Ste Hippolyte... then the whole thing disappeared on the spot. No noise, no effect.

Categorization: HOAX.

It is specified that this case falls under those of "the theoretical territorial coverage of the "CNEGU" but located in departments not yet covered in practice other than occasionally."



The forest of Saint-Hippolyte is 5 km south-south-east of La Vancelle, on the other side of the valley.

Regretably the only source at the moment [lbs1] gives little information, and no source.



Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:


Main author: Patrick Gross
Contributors: None
Reviewers: None
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross August 3, 2022 Creation, [lbs1].
1.0 Patrick Gross August 3, 2022 First published.

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This page was last updated on August 3, 2022.