In late 1968, people around Puente Almuhey in León reported unusual evening lights on three dates: 24 November, 8 December and 10 December. The accounts included a reddish disc apparently dividing and recombining, a changing horn-like form, and a slower white or yellow light seen on subsequent evenings. Spanish air authorities collected statements and compared the reports.
The surviving file does not establish that a single physical object caused every observation. It groups the reports because they occurred in the same locality, at broadly similar hours and with related descriptions. Both the original covering assessment and the later review stressed the uncertainty and discrepancies. The case is classified as Insufficient evidence; suggested astronomical explanations were explicitly tentative.
The November observation
The 24 November accounts place the phenomenon around 22:00 local time, lasting roughly ten to fifteen minutes. The later assessment compares two testimony entries, while the original investigator notes that the people involved included a married couple and another observer who was unrelated to them. Testimony entries should not be treated as a precise count of separately tested, independent witnesses.
One description concerned a luminous disc which seemed to separate into three equal discs and return to a single form before fading. Another described a circular object changing into something horn-like, with a rising boundary and progressive darkening. The surviving form attributes a reddish, continuous light to the latter account and places its direction towards the southwest.
Those descriptions overlap in date, duration and an unusual changing appearance, but differ in what the change looked like. They should be presented side by side rather than combined into a machine that performed every reported transformation. The forms’ physical-size estimates also lack a demonstrated measured distance. A stated diameter is an observer’s estimate, not a recovered object dimension.
The December evenings
Three testimony entries concern 8 December. The later reviewer considered their places and times reasonably compatible, while explicitly noting an ambiguity: one form’s 07:30–08:00 notation had to be interpreted as evening hours to fit the others. That is an interpretive qualification in the dossier, not an independently verified exact start time.
The descriptions ranged from a circle or sphere to an ovoid or lantern-like form. The reported colour lay between yellow and white, with slow movement. The original investigator summarised these December observations more cautiously as a strong, small-looking light whose shape could not securely be established. This difference illustrates how an individual’s visual comparison can become a more guarded collective summary.
For 10 December, the review lists three testimonies beginning around 19:00–20:00. Two place the light towards the southwest and describe a duration of about ninety minutes; another gives a longer observation without a direction. The light was described as white, round or ovoid, and slowly moving. Some forms cover both December dates, so repeated entries are not additional independent people.
The duration separates these reports from a simple split-second flash. It does not, however, identify their source. Without secure angular measurements, positions at successive times or an independently matched astronomical or aviation record, prolonged viewing alone cannot establish a physical trajectory.
What the authorities collected
The release contains six witness declaration forms, an investigator’s report dated 14 January 1969 and the regional covering letter of 22 January. The proceedings followed a letter from the railway station chief reporting an unfamiliar aerial phenomenon. The individual forms were taken in December, after the dates they describe.
The questions asked about the date, place, hour, size, shape, height, sound, direction, speed, duration, colour and continuity of the light. They also asked whether the person knew common atmospheric phenomena. This provides more detail than an isolated newspaper anecdote, but a questionnaire is not a calibrated observation programme. Several answers remained approximate or incomplete.
The January report distinguished the November appearance from the December lights. It described the latter as white-to-yellow, sometimes apparently stationary for a substantial period, with no reported sound and eventual disappearance towards the southwest. Estimated heights and distances were not fixed by independent measurements. The March 1993 review judged that the investigation had essentially been limited to taking witness statements, which were imprecise and sometimes discrepant.
The Moon and Venus suggestions
The January covering letter said the November and December appearances could not be identified from the confused information. It suggested, only remotely, a setting Moon for the first group and a setting planet for the later group, under unusual visibility or low-cloud conditions. It did not present a completed calculation identifying either phenomenon.
The 1993 reviewer referred specifically to the Moon and Venus, but again said the shortage of data prevented an explanatory hypothesis with sufficient reliability. That restriction is central to the record. The existence of a plausible class of sky phenomena is not the same as matching an object’s position, time and appearance to a particular astronomical source.
It would therefore overstate the file to label this cluster explained by Venus. It would also overstate it to describe a high-evidence extraordinary craft left unexplained after extensive instrument testing. What survives is a collection of visual accounts and an official admission that the available particulars were not adequate for a reliable identification.
How the reports are represented
This article retains the disc and multiple-lights tags for the November description of a luminous disc separating into three. The orb tag reflects the explicitly spherical comparison in the December summary. These are reported appearances, with their disagreements preserved; the tags do not establish solid craft or three physically separate vehicles.
No radar, landing or water-entry tag is assigned. The paperwork supplies no positive radar track or established contact with the ground or water. The reported light’s apparent height and changing silhouette should not be used to invent those features. The dates remain 1968; the later January inquiry and 1993 declassification are documentary stages.
Keeping the nearby reports together follows the dossier’s grouping and prevents three artificial case counts. It does not require accepting that each witness saw the same source. The November transformations and the slower December light may warrant different explanations, but this file does not establish either one.
Location and source trail
Approximate map area: 42.79, -4.97, a rounded Puente Almuhey locality reference based on RENFE’s published station coordinates. The railway station is a useful public geographical anchor in a case that includes station-area references. It is not asserted to be the exact observation point for every witness or the position of an aerial object. No private residence or visitor route to a reported encounter site is identified.
Read Biblioteca Virtual de Defensa, dossier 6811/12RV and its 13-page digital release. Physical page 2 contains the later comparison and limitations; page 4 gives its tabulated summary; pages 6–7 contain the January covering letter and investigator’s report; pages 8–13 preserve the declaration forms. Handwritten originals should be consulted where compressed summaries obscure differences. The lead image is the government assessment page, not a photograph of a changing object.
The RENFE Puente Almuhey station information sheet supplies the coordinate reference. For an astronomical hypothesis supported by a much more detailed flight chronology, search the Cases directory for the separate IB-435 incident of February 1969. That case’s Venus reasoning must not be transferred to this one merely because the same planet was mentioned. Sources and the archive’s explicit CC BY 4.0 digital-copy licence checked 13 November 2026.