Die Glocke
A secret Nazi device said to have produced anti-gravity or time-distortion effects. Every account traces to one 1997 book, whose evidence is a transcript its author says he was allowed to read but not keep.
Why this verdict
Debunked at its single point of origin: the entire claim derives from one author's account of documents he says he was shown and not permitted to copy, and no corroborating record exists in any archive.
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- Sources
01The claim
That the SS developed a device codenamed Die Glocke — a bell-shaped apparatus containing counter-rotating cylinders and a substance called Xerum 525 — which produced anti-gravitational or temporal effects, killed several scientists during testing, and was evacuated at the end of the war, in some tellings to the United States and in others to Antarctica.
02Where it came from
The claim has one source. Igor Witkowski, a Polish writer, published Prawda o Wunderwaffe in 1997, saying he had been shown transcripts of the interrogation of SS officer Jakob Sporrenberg by an unnamed Polish intelligence officer, permitted to read and take notes but not to copy them. Nick Cook, then an aviation journalist, repeated the account in The Hunt for Zero Point in 2001, which brought it to an English-language audience and to television.
03What the record shows
✕ DEBUNKED — Investigated and refuted. Here is what actually happened.
The evidential position is a closed loop. Witkowski's transcript has never been produced, the officer who supposedly showed it has never been named, and no copy has surfaced in Polish, German, Russian or Allied archives. Every subsequent account cites Witkowski or Cook.
Sporrenberg was a real SS officer, tried in Poland and executed in 1952. His trial record exists and is accessible. It concerns his role in mass murder in occupied Poland, principally Aktion Erntefest; it contains nothing about an anti-gravity device.
The structure said to be associated with the project — a concrete ring near the Wenceslas Mine at Ludwikowice in Poland, often shown as a test rig — is a cooling-tower foundation of a type common at industrial plants of the period, identified as such by local industrial archaeology.
The substance and the physics are not describable in any coherent way. Xerum 525 appears nowhere outside this literature. The German nuclear and rocket programmes are among the most thoroughly documented technical efforts of the twentieth century — through Allied exploitation teams, the Alsos Mission, captured records and forty years of scholarship — and the projects that were real, including the ones that were exotic, are on paper. This one is not.
What gives it purchase is a genuine substrate, which is why it belongs in the archive rather than in a footnote: the Nazi programme did produce ballistic missiles and jet aircraft, those engineers were extracted by both superpowers under Operation Paperclip and its Soviet equivalent, and that extraction was concealed. A reader who knows the confirmed history has good reason to believe some German technology was hidden. That is exactly the belief this claim occupies.
04What it cost
Chiefly a publishing and television phenomenon, with a market in documentaries and a persistent presence in Nazi-survival and secret-technology material. The specific harm is its adjacency: Die Glocke circulates alongside claims about a surviving Reich and, in some quarters, functions as a glamorising frame around an SS officer executed for participating in the murder of tens of thousands of people. The concrete ring in Poland is now a paying tourist attraction.