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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 the Donon, in 2011:

Case number:



On December 4, 2017, I received a non-anonymous email from someone who saw that I was posting about UFO sightings on the web, and who informed me had seen a possible UFO in the year 2011, at an exact date he did not remember.

At the Donon Pass, between midnight and 1:00 a.m., he was looking at the stars, as he likes to do, when he saw that there was a red light in the sky, which initially did not move. So he thought it was Mars.

But slowly it started to move, then it followed a sort of zigzag up and down several times very quickly, then it left in straight line at lightning speed or in a kind of "flash".

The witness thinks that it is impossible that it was "a laser or something", because he was in the mountain where he lived, with a good view to the sky at night, and no cities around.


Temporal data:

Date: 2011
Time: ~00:30
Duration: ?
First known report date: December 4, 2017
Reporting delay: 7 years.

Geographical data:

Department: Bas-Rhin
City: Schirmeck
Place: Pass of the Donon, UFO in the sky.
Latitude: 48.507
Longitude: 7.143
Uncertainty ratio: 2 km

Witnesses data:

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

Ufology data:

Reporting channel: Email sent to me.
Type of location: In mountain from a pass, UFO in the sky.
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: Puzzled.
Witnesses interpretation: Not laser, possible UFO.


Hynek: NL
ALSACAT: Unidentified.


[Ref. pgs1:] EMAIL SENT TO ME:

Subject: Following your poste
Sent: Dec 4, 2017, 6:01 AM
From: [Firstname] and [Firstname] [Name] [userid]


I contacts you following your page about ufo sightings.

Indeed year 2011, i am not sure about the dates.

Between midnight and 1:00 a.m., i saw an appearance, possible ufo.

I love to watch the stars at night, so that night, there was a red light in the sky, it did not move at first, so i thought it was Mars, but slowly it started to move, then it made a kind of zigzag from bottom to up sevral times but fast, then it went away fast in a kind of flash speed in straight line.

Impossible that it was a laser or something, i lived in the mountain of the pass of the DONON in Alsace. So good sight on the sky at night, and no cities around.

That's my little story. I do not know if this is going to help you, but, well.

Good week to you.
Regards [Initials].



The Donon is a pass in the Vosges mountains at about 1000 meters altitude.

An observation with similarities in the description was apparently made from Belmont, not dar from Le Donon, in 1996.



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 February 5, 2018 Creation, [pgs1].
1.0 Patrick Gross February 5, 2018 First published.

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This page was last updated on February 5, 2018.