CORROBORATED
CF-GEI-19900701209 CORROBORATED
The Caorches-Saint-Nicolas Crater Mystery
CASE FILE — CF-GEI-19900701209 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
1990-07-06
Location Reported location of the sighting or event
Caorches-Saint-Nicolas, Eure, Haute-Normandie, France
Duration Estimated duration of the observed phenomenon
unknown
Object Type Classification of the observed object based on witness descriptions
other
Source Origin database or archive this case was sourced from
geipan
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On July 6, 1990, a mysterious crater appeared in a field near Caorches-Saint-Nicolas in Normandy, France. The crater measured 14 meters in diameter with a collapsed earth ring approximately 2.5 meters wide and a central mound measuring 4.5 meters by 1.5 meters in height. The discovery was reported to SEPRA (Service d'Expertise des Phénomènes de Rentrée Atmosphérique, the predecessor to GEIPAN) via media sources on July 11, 1990. The unusual formation immediately drew attention due to its size and mysterious origin.
Initial examination of the rocks and large blocks brought up from the subsurface led investigators to consider two primary hypotheses: the impact of a large meteorite or an underground explosion. To determine the cause, authorities mobilized a backhoe to carefully excavate the crater in layers of 50-70 cm, eventually reaching a depth of 7 meters. As the investigation progressed, metal sheet fragments were discovered at various depths throughout the excavation.
A total of twenty-five metallic fragments were recovered from the crater, which definitively excluded the meteorite hypothesis. The fragments were sent to the DGA (Direction Générale de l'Armement) weapons laboratory for analysis. Laboratory reconstruction and analysis identified the debris as remnants of a 250 kg incendiary bomb of British or American origin, likely manufactured in April 1942 during World War II. The bomb had apparently remained buried since the war and detonated decades later, creating the mysterious crater that initially puzzled local residents and investigators.
02 Timeline of Events
1942-04
Bomb Manufactured
A 250kg incendiary bomb of British or American origin is manufactured, likely for use in WWII operations over occupied France.
1942-1945
Bomb Deployment and Burial
The incendiary bomb is dropped over Normandy region during WWII operations but fails to detonate, becoming buried in the ground near Caorches-Saint-Nicolas.
1990-07-06
Crater Appears
A mysterious crater suddenly appears in a field near Caorches-Saint-Nicolas, measuring 14 meters in diameter with a 2.5-meter collapsed earth ring and central mound of 4.5m x 1.5m height, likely caused by delayed detonation of the buried bomb.
1990-07-11
SEPRA Notified
SEPRA (later GEIPAN) is informed via media reports of the crater discovery and begins official investigation.
1990-07-11 to 1990-07
Systematic Excavation
A backhoe is mobilized to carefully excavate the crater in 50-70cm layers, proceeding to a depth of 7 meters. Twenty-five metallic fragments are recovered at various depths.
1990-07
Laboratory Analysis
Metal fragments are sent to DGA (Direction Générale de l'Armement) weapons laboratory for expert analysis.
1990-07
Identification Confirmed
DGA laboratory reconstruction identifies the fragments as belonging to a 250kg British or American incendiary bomb manufactured in April 1942. Case classified as 'A' (explained) by GEIPAN.
03 Analyst Notes -- AI Processed
This case represents an excellent example of GEIPAN's thorough investigative methodology and demonstrates why proper scientific investigation is essential before jumping to extraordinary conclusions. The systematic excavation, layer-by-layer documentation, and laboratory analysis of physical evidence followed proper protocols. The DGA laboratory's ability to reconstruct the device and determine its origin, nationality, and even approximate manufacturing date (April 1942) showcases the value of expert metallurgical analysis. The region's history as part of the World War II theater makes the presence of unexploded ordnance entirely plausible.
The GEIPAN Classification 'A' is appropriate here, indicating a case with a conventional explanation supported by conclusive physical evidence. The crater's dimensions (14m diameter, 7m depth) are consistent with the detonation of a 250kg incendiary bomb. Delayed detonation of WWII-era ordnance remains a documented hazard in former combat zones throughout Europe, with chemical degradation, ground movement, agricultural activity, or environmental factors potentially triggering explosions decades after burial. This case holds no anomalous elements and serves primarily as a cautionary reminder of lingering wartime dangers rather than an unexplained aerial phenomenon.
04 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Meteorite Impact Hypothesis
Initial examination of the crater and displaced subsurface rocks led investigators to consider the possibility of a large meteorite impact. The size of the crater (14m diameter) and the presence of large rocks brought to the surface were consistent with impact scenarios. However, this hypothesis was definitively ruled out when metal sheet fragments were discovered during excavation—meteorites would not produce manufactured metal debris.
05 Verdict
ANALYST VERDICT
This case is definitively explained as the delayed detonation of a World War II-era incendiary bomb. The physical evidence—25 metallic fragments recovered from depths up to 7 meters—combined with expert laboratory analysis provides conclusive identification of a 250kg British or American incendiary bomb manufactured in April 1942. Normandy's role in WWII operations makes buried ordnance entirely expected in the region. While the initial crater discovery may have sparked local speculation about meteorites or unknown phenomena, the systematic investigation demonstrated the importance of evidence-based analysis. This case holds no significance for UAP research but serves as an important reminder that unexploded ordnance from past conflicts continues to pose real dangers in former war zones across Europe.
AI CONFIDENCE SCORE:
85%
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