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As its name suggests, 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 Sainte-Marie-aux-Mines, on May 20, 1952:

Case number:



In the ufology magazine Lumières Dans la Nuit #221-222 for November / December 1982, J. Journot reported on his investigation into a case à in Kaysersberg in 1982; on this occation ufologist Fernand Lagarde made his comments, and listed some other sightings around this town, including an observation in Sainte-Marie-aux-Mines on May 20, 1952.


Temporal data:

Date: May 20, 1952
Time: ?
Duration: ?
First known report date: 1982
Reporting delay: Days, 3 decades.

Geographical data:

Department: Haut-Rhin
City: Sainte-Marie-aux-Mines
Place: ?
Latitude: 48.245
Longitude: 7.182
Uncertainty ratio: 8 km

Witnesses data:

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

Ufology data:

Reporting channel: ?
Type of location: ?
Visibility conditions: ?
UFO observed: Yes
UFO arrival observed: ?
UFO departure observed: ?
Entities: No
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: ?
ALSACAT: Totally insufficient information.





It should be mentioned, however, that the Haut-Rhin department, in addition to BAVIC crossing its south, has been well supplied with observations since 1952. There are 110 of them in our archives, and it is certain that this number represents only a small part of reality.

If, around KAYSERSBERG as the center, we draw a circle with a radius of 15 km (good viewing distance for a phenomenon of the observed type) we find as observations (Michelin map #62 folds 17-18-19) by turning from the left to the right: Ste Marie-aux-Mines: 5/20/52; [... other cases...]

Notes: In the years 1960-1980, ufologist Fernand Lagarde searched for "connections" between UFO observations places and, among other things, "geological faults". Without wishing to specify what such a link would demonstrate, he had often commented on reports of investigations by local investigators published in the ufology magazine Lumières Dans La Nuit, intending to show that such geographic connections did exist.

In the case of Alsace, the task is easy: the whole of the plain of Alsace is a basin of collapse of the old Hercynian mountain range top, of which only the "edges" remain, the Vosges and the Black Forest on the other side of the Rhine River, in Germany. As a result, one should claim that all observations in Alsace are located on a geological fault! Is there anything to be concluded from this as to the nature of the observations? In my opinion, absolutely nothing.

As for "BAVIC", mentioned by Lagarde, it was about a line across France passing by the cities of BAyonne and VIChy, on which the pioneer ufologist Aimé Michel had thought in the years 1950, that on September 24, 1954, there were such a large number of "aligned" sightings on this line that mere chance could not account for it.

Michel, not having the resources to go check each observation report, argued that this alignment signified the reality and the remarkable nature of these observations since hallucinations, lies and misinterpretation could not be propagated on such a straight line.

In reality, the "statistically improbable" character of this alignment has been questioned, but above all, most if not all of the cases he cited for this day are not only explained by trivial causes (mistakes, hoaxes ...), not only were they badly dated and almost never occurred on September 24, 1954, but also, Aimé Michel had not at all been aware of all the cases of that day.

Aimé Michel, at the end of the 1960s, admitted that the "BAVIC line" had no reality; but many others like Fernand Lagarde continued to promote it as a "fact", "extending" the line geographically all around the world and extending it temporally to any observation on this line whatever the date, but without ever verifying that it there would really be a statistical anomaly in this.



I found nothing else about this sighting report so far.


Totally insufficient information

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 June 22, 2021 Creation, [ldl1].
1.0 Patrick Gross June 22, 2021 First published.

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This page was last updated on June 22, 2021.