The Petit-Rechain photograph April 1990 — the iconic image of the Belgian Triangle wave

On the night of April 4, 1990 — during the sustained Belgian Triangle UAP wave that had begun in November 1989 and would continue into April 1990 — an amateur photograph taken at the Belgian municipality of Petit-Rechain in the Liège Province produced what became, across the subsequent decades, the single most-reproduced photographic image associated with the Belgian wave and one of the most iconic UAP photographs of the modern European record. The Petit-Rechain photograph is institutionally significant both for its substantive content and for the long-running analytical and authenticity dispute that has surrounded the image since its initial public release.

The photograph and its initial release

The photograph was taken by a young Belgian amateur (whose identity was protected at his request for substantial portions of the subsequent decades) at the Petit-Rechain location on the evening of April 4, 1990. The image, exposed at relatively long shutter speed against the night sky, depicts a dark triangular form with three distinct corner light-points and a central bright light-point. The triangular form is substantively the shape that characterised the broader Belgian wave's principal observational pattern, and the photograph's substantive content was substantively consistent with the visual descriptions provided by substantial numbers of witnesses across the broader wave period.

The photograph reached public release through the Belgian civilian UAP-research organisation SOBEPS (Société Belge d'Étude des Phénomènes Spatiaux) in mid-1990 and substantially became the visual anchor image for the broader Belgian Triangle wave in subsequent international press coverage and research literature.

The substantive analytical engagement

The Petit-Rechain photograph has been the subject of substantial subsequent analytical engagement by Belgian, French, and international photographic and image-analysis researchers across decades. The substantive analytical findings have included: the photographic negative is institutionally authentic and has not been substantively altered through standard image-manipulation methodology; the photographed scene is substantively consistent with a real object photographed against the night sky rather than with composite or in-camera-manipulation production; the triangular form's substantive dimensional characteristics are inconsistent with any conventional aircraft of the period that could plausibly have been at the photographed location.

However, in 2011 the photographer (Patrick Maréchal, who substantively revealed his identity in that year) substantively publicly stated that the photograph had been a deliberate hoax, produced by photographing a piece of polystyrene with attached light-bulbs against a night-sky background. The substantive 2011 admission produced substantial subsequent re-engagement with the case across the international UAP-research literature.

The substantive interpretive position

The substantive interpretive position the case currently occupies is substantively complicated. The 2011 hoax admission is institutionally substantive and substantially supports the conclusion that the specific Petit-Rechain photograph is not a substantively legitimate UAP-record image. However, several substantive analytical questions remain. The substantive analytical findings from the pre-2011 photographic analyses are substantively difficult to reconcile cleanly with the hoax-admission account in some specific technical details. The substantive contemporaneous witnesses to the photographer at the time of the photograph's production have given variable subsequent accounts. The substantive broader Belgian Triangle wave to which the photograph was associated includes substantial other substantive observational material that is institutionally independent of the Petit-Rechain photograph and that the photograph's substantive status does not substantively bear on.

The substantive analytical consensus across most contemporary researchers is that the Petit-Rechain photograph is substantively most likely a hoax (consistent with the 2011 admission) and that the substantive broader Belgian Triangle wave remains substantively institutionally significant on the basis of other substantive observational material independent of the photograph. For the broader Belgian Triangle wave context, see the SkyLens UAP files page.

Editorial note: Independent SkyLens deep-dive on a specific historical UAP case. The summary entry and broader case index are on the SkyLens UAP files page.