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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.

Case of Mertzen, on October 2, 1977:

Case number:



In a catalogue published in May 1980 in the ufology magazine Lumières Dans La Nuit, ufologist Eric Zurcher said that according to a communication to ufologist Alain Gamard by Mr, Seray, there was a case on October 2, 1977 in Mertzen in the Haut-Rhin:

An object landed in a field and a being all dressed in white came out of it.

Zurcher said there was an "ongoing investigation" about it.


Temporal data:

Date: October 2, 1977
Time: ?
Duration: ?
First known report date: May 1980
Reporting delay: 3 ans.

Geographical data:

Department: Haut-Rhin
City: Mertzen
Place: ?
Latitude: 47.590
Longitude: 7.129
Uncertainty ratio: 500 m

Witnesses data:

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

Ufology data:

Reporting channel: Personal communication from ufologist Patrice Seray to ufologist alain Gamard.
Type of location: In a field.
Visibility conditions: ?
UFO observed: Yes
UFO arrival observed: ?
UFO departure observed: ?
Entities: Yes
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: CE3
ALSACAT: Possible misdated case with mistyped place.


[Ref. ez1:] ERIC ZURCHER:

201. 10/02/77. Mertzen (68)

Observation of an object that lands in a field and of a being all dressed in white that comes out of it. Ongoing investigation.

Communication from Mr Seray to Alain Gamard.

[Ref. ro1:] RAOUL ROBE:

The catalogue compiled by Raoul Robé is described as publishing the "humanoids" appearances - in a broad sense - that occurred since 1900 on the action area of the 'ufology group CNEGU, comprizine Haut-Rhin and Bas-Rhin. It is said the work has been done thanks to the collaboration of associations members of CNEGU, and people from "Lumières Dans La Nuit", including Alain Gamard.

There is a "List of the Humanoid cases in the N.E.", where this appears, inter alia:

35 02.10.77 ? Mertzen (68) ?

(There are possibly details in the following pages but unfortunately I do not have them for now).


Mertzen (68) on 02 October 1977

General features

Num Base: 1402
Département: Haut Rhin (68)
Place of observation: Mertzen
Latitude: 47.583
Longitude: +7.133
Date of observation: 02 October 1977
Hour: Hour not known
Duration (HH:MM:SS): N.C.
Weather: No weather indication
Type of observation: Visual close with figures
Nbr of witness(es): undetermined number
Official investigation: No

Features of the object

Nbr of object: 1
Type of object: Non-defined
Size: Not specified
Color: not defined
Luminosity: Not specified
Visual characteristics: No indication
Speed: not defined
Movement/Displacement: Landing
Object on the ground: Yes
Instantaneous disappearance: No

Features of the entity/entities

Number: 1
Description: Non defined


An object is said to have landed, and a white humanoid shape is said to have emerged from the object. No other detail.


Lumières dans la Nuit issue 195

[Ref. oi1:] "OVNIS INFO":


- In Mertzen, October 2, 1977


City Date and hour of observation General shape
General color
MERTZEN Sunday 2 October 1977 information not communicated
information not communicated
Unsolved -lack of info


The communication by Patrice Seray may have been correctly quoted by Mr. Zurcher or not, I however have the strong feeling that this is possibly a mixup about the case in Merxheim, not Mertzen, also in the Haut-Rhin, and on November 6, 1975, not October 2, 1977. The Merxheim case - of low credibility - will have its own file.

Indeed, we have only the repetition od th first sources by the others with absolutely no added value.


Possible misdated case with mistyped place.

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
Editeur: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross June 2, 2015 Creation, [ez1], [ro1], [lc1], [oi1], [sp4].
1.0 Patrick Gross June 2, 2015 First published.

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This page was last updated on June 2, 2015.