Within Biscay UFOs
Why Did Gallarta Enter the Defence Files?
The Ministry of Defence file shows how a local story became a documented military intelligence case without becoming proof of a craft.
On this page
- How Spain's UFO files were declassified
- What makes Biscay's file unusual
- The limits of an official paper trail
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Introduction
Gallarta entered Spain’s Defence UFO archive because a local Biscay story crossed the threshold from newspaper curiosity into a military intelligence file. The case did not become official proof of a craft. It became something more limited, but still valuable: a documented trail showing how the Air Force received, filed, investigated, classified and later declassified an extraordinary claim from Biscay. The Ministry of Defence catalogue records the Gallarta file as a 93-page online resource produced by the Air Operational Command, General Staff and Intelligence Section, covering events dated 13 February 1977 and published as a 1977–1979 file. It was declassified by order JEMA 236 on 18 January 1995.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
That is why Gallarta matters within Biscay’s UFO history. The official paper trail is unusually traceable for a province whose public Defence-file footprint is otherwise narrow. The file confirms that the story was taken seriously enough to be processed by military channels, but it also shows the central limit of declassification: a state archive can preserve claims, interviews and official judgements without validating the most dramatic interpretation of those claims.
How Spain’s UFO files were declassified
Spain’s public Defence UFO archive grew out of a national declassification process that began in 1991. The Ministry of Defence explains that the files concerned “strange phenomena” sightings, commonly known as UFO files, and that the Defence Ministry decided to analyse them and, where appropriate, reduce their classification level so that a public requesting access could consult them. In 1992, a physical copy was deposited in the Air Force Central Library in Madrid; later digitisation made the material available through the Virtual Defence Library.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
The national collection is not a free-form folklore archive. It is an Air Force file set. The Ministry describes 80 files and about 1,900 pages concerning unusual phenomena within Spanish airspace in which Air Force personnel or material were involved in some way. The files range from the first listed case in 1962 at San Javier to a 1995 case at Morón, and the archive notes that personal details of declarants and reporting officers are omitted despite declassification.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
That framework matters for Biscay. A story did not enter this archive simply because local people talked about it, nor because it later became famous among UFO writers. It entered because the Air Force generated or retained a case file. The Ministry’s own description says each file normally contains summary pages giving the place, date, factual summary, considerations, conclusions and classification or declassification proposal, followed by varying supporting material such as witness interviews, incident reports and weather documents.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
For a reader trying to understand Gallarta, this is the first important distinction. Declassification is not the same thing as endorsement. It means that a formerly restricted administrative or intelligence file has become consultable. The paperwork can prove that officials handled a report, but it cannot by itself prove that the report described an extraordinary object.
What makes Biscay’s file unusual
Biscay’s Defence-file footprint is concentrated around a single landmark entry. In the Ministry’s UFO title list, the Gallarta item appears as “Avistamiento de fenómenos extraños en Gallarta (Vizcaya): 13 de Febrero de 1977”, with a publication span of 1977–1979.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.es› Listado de títulos… The catalogue record gives the issuing body as the Air Operational Command, General Staff, Intelligence Section, and describes the file as 93 pages with illustrations, graphs and plans.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
That size is notable. Many declassified UFO files are short administrative packets, sometimes only a few pages. Gallarta’s 93 pages suggest a more developed paper trail: not necessarily stronger evidence, but more layers of reporting, correspondence, interviews, sketches or supporting material than a routine sighting note. The file’s signatura is 770213, matching the 13 February 1977 date used as the official case anchor.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es.
The case also stands out because it began as a highly local story. Later accounts point to press coverage in March 1977 about alleged landing traces on a spoil heap at Gallarta. Magonia, summarising the case and later sceptical research, reports that La Gaceta del Norte covered the discovery of numerous supposed landing marks on 24 March 1977, and that naval engineer José Luis Lozón claimed to have seen a large, shiny, mushroom-like object rise rapidly from the area.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
The file trail therefore connects three worlds that often remain separate: a Biscay mining landscape, a local and national press story, and a Defence intelligence record. That combination is why Gallarta has a larger afterlife than a simple “strange light in the sky” report. It created documents that can be followed, challenged and re-read.
How a local story became a Defence case
The Gallarta case appears to have reached official attention through publicity rather than through a clean aviation incident such as a pilot report or radar alert. Magonia states that the newspaper coverage led the Air Force to open file 770213, dated to the day Lozón said he saw the object.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia This is an important point: the trigger was not necessarily a confirmed military detection, but a publicised claim that officials then had to process.
Once officials looked into the matter, the case expanded beyond Lozón. The most sensational part concerned his father-in-law, Juan Sillero, who lived near the spoil heap and reportedly described repeated encounters with landed craft and beings. According to Magonia’s account of the file and later reporting, Air Force investigators were struck by the “fantastic” tone of Sillero’s account, and the file’s later official assessment was sharply sceptical of the witnesses’ reliability.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
This is where the Defence file is most useful for readers. It does not simply preserve the exciting version. It also records the institutional reaction to it. Magonia reports that, by June 1977, the informing judge attributed the events to Sillero’s imagination and described him as appearing outside the normal range; in August, the chief of the 3rd Air Region reportedly told the Air Staff that the information from Lozón and Sillero was not credible, and that Sillero’s state did not guarantee mental balance.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
Those are not neutral or modern clinical conclusions, and they should not be treated as a complete explanation of a person. They do, however, show that the military paper trail moved towards doubt rather than confirmation. Gallarta became an official case because it was investigated, not because the investigation supported the most extraordinary claims.
Why declassification strengthened the archive but weakened the legend
For UFO history, declassification often has a double effect. It strengthens the historical record because researchers can point to catalogue entries, dates, issuing bodies and file structures. But it can weaken the legend because the documents often reveal how cautious, incomplete or sceptical the official conclusions were.
Gallarta is a good example. The catalogue proves the existence of a Defence file, identifies its institutional authorship, gives its physical extent, and names its declassification order.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. The national archive page also explains what such files usually contain: summary pages, witness material, reports and classification proposals, varying from case to case.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. That is real documentary value.
What the file trail does not do is establish an extraordinary craft. Later sceptical inquiry undermined one of the most memorable pieces of physical evidence: the alleged landing marks. Magonia reports that investigators associated with the sceptical Colectivo Iván found the marks irregular, with stones near many holes matching their shapes, and that a local excavator operator, Adrián Tramón, explained he had made them while extracting mineral stones. The same account says Sillero later admitted in writing, on 18 May 1980, that the marks photographed and published as UFO traces had been made by Tramón.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
That does not automatically explain every statement made in 1977, but it changes the weight of the case. A close-encounter story with alleged landing traces is stronger than a close-encounter story whose traces are later attributed to ordinary spoil-heap work. Declassification helps readers separate “there was a Defence file” from “the Defence file proves a landing”.
The radar wrinkle and why it does not settle the case
One reason Gallarta remained attractive to UFO writers is that it was not only a witness story. Magonia notes that Juan José Benítez later cited a letter from the chief of the 3rd Air Region saying that, on three nights in February and March 1977, unidentified radar echoes had been detected over Biscay and fighters had twice been scrambled to intercept.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
That detail is important, but it needs careful handling. Radar references can make a case sound far more solid than a ground witness account, because they imply instrument data and military response. Yet radar echoes are not automatically structured craft, and a scramble does not mean interception, identification or confirmation of a landed object near Gallarta. Without the full chain of technical records, timings, tracks, operators’ notes and correlation with the ground claims, the radar element remains a complicating detail rather than a decisive proof.
The safest reading is that Gallarta’s file trail contains, or was later associated with, more than one evidential strand: press reports, witness interviews, alleged ground marks, official assessments and claims about radar activity. Those strands do not all carry the same weight. The ground traces were later seriously weakened; the main close-encounter testimony was doubted by officials; the radar material may show military attention to unidentified returns over Biscay, but it does not by itself validate Sillero’s landing narrative.
The limits of an official paper trail
The Gallarta file shows why official status must be read precisely. In the Defence archive, the file is real, traceable and formally declassified. It is held in the Air Force Central Library collection, with a catalogue record, a shelf mark, a barcode and a rights statement for the digital copy.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. That gives Biscay a firmer documentary anchor than many local UFO stories have.
But “official” does not mean “accepted as true”. Spain’s archive description makes clear that the files are administrative records of reported unusual phenomena in which the Air Force had some involvement, not a catalogue of confirmed unknown craft.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. In Gallarta, the known official judgements reported in later summaries point towards disbelief in the strongest witness claims rather than validation.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
There is also a broader access limit. Recent Spanish transparency reporting indicates that not all material of this type is simply open on request. In 2022, El Confidencial Digital reported that Air Force UFO-related files, until declassification, were treated as confidential under Instruction 40-5, with custody by the Intelligence Section of the Combat Air Command.[Confidencial Digital]elconfidencialdigital.comOpen source on elconfidencialdigital.com. In 2024, the same outlet reported that Spain’s Transparency Council accepted Defence’s position that still-classified reports could remain protected for defence reasons, while directing requesters to the already public Virtual Defence Library.[Confidencial Digital]elconfidencialdigital.comOpen source on elconfidencialdigital.com.
For Biscay, this means the Gallarta file should be valued for what it is: a rare declassified provincial case with a visible institutional trail. It should not be stretched into a claim that Defence confirmed a landing, nor that all relevant material about Spanish UFO reports is automatically public.
What readers should take from the Gallarta file
The Gallarta Defence file matters because it gives Biscay’s UFO history a documentary spine. It shows the path from local report to press amplification, from press story to Air Force file, and from classified handling to public archive. That makes it a useful case for understanding governance: how a state records unusual claims, how it classifies and later releases them, and how an official file can preserve both the claim and the doubts around it.
The strongest evidence is not evidence of a craft, but evidence of process. The catalogue confirms the official file, its Defence authorship, its 93-page extent, its date range and its 1995 declassification.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. The Ministry’s archive page explains the wider Spanish declassification system and the kinds of material these files normally contain.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.esOpen source on gob.es. Later sceptical reporting shows why the case’s dramatic elements became harder to defend, especially after the alleged landing marks were attributed to mineral extraction rather than a landed object.[Magonia]magonia.comEncuentros en la tercera fase en Gallarta – MagoniaEncuentros en la tercera fase en Gallarta – Magonia
The most balanced conclusion is therefore narrow but meaningful. Gallarta entered the Defence files because an extraordinary Biscay story became administratively and militarily reportable. Declassification turned that story into a public case file. It did not turn it into proof.
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Endnotes
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Source: magonia.com
Title: Encuentros en la tercera fase en Gallarta – Magonia
Link:https://magonia.com/2016/11/07/encuentros-en-la-tercera-fase-en-gallarta/
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Source: magonia.com
Title: Juan Sillero
Link:https://magonia.com/tag/juan-sillero/
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Source: magonia.com
Title: Vendedores de misterios
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Source: magonia.com
Title: Juan José Benítez
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Title: Historias – Página 4
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