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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 - has 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], [spa4].
1.0 Patrick Gross June 2, 2015 First published.

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This page was last updated on June 2, 2015.