Summary
This sheet gathers the stories that turn Antarctica into a guarded frontier. In the most widespread version of today's flat-Earth belief, NASA watches over the ice wall and government agencies fabricate the evidence of a round Earth. Operation Highjump is the favourite exhibit: a February 2024 Facebook video presented it as a military mission to find out what lay beyond the "ice wall", and other tales claim that Admiral Richard E. Byrd was driven away by saucers from the Hollow Earth, or sent to attack a secret Nazi base. Many believers also read the 1959 Antarctic Treaty as a ban on civilians, meant to stop anyone from seeing the other side.
The record tells a plainer story. Highjump, Byrd's fourth Antarctic expedition, ran from August 1946 to late February 1947 with 4,700 men, 13 ships and 33 aircraft; its tasks were to set up the Little America IV base on the Ross Ice Shelf and to train the US Navy in polar conditions. It stopped because winter was coming and the weather was getting worse. In an interview published in the Chilean newspaper El Mercurio on 5 March 1947, Byrd warned that the United States could be attacked by aircraft flying over the poles, a strategic lesson rather than a discovery. No evidence ties the operation to an ice wall, and neither a study in Polar Record nor Byrd's own papers support the Nazi-base and Hollow Earth versions.
What the thesis says
The sources show where these claims circulate, not that they are true.
- Thesis
In the most widespread version of current flat-Earth theory, NASA guards the Antarctic ice wall that surrounds the Earth, and government agencies fabricate the evidence that it is round.
- Modern flat Earth beliefs, Wikipedia
According to the most widely spread version of current flat-Earth theory, NASA is guarding the Antarctic ice wall that surrounds Earth.
- Modern flat Earth beliefs, Wikipedia
- Thesis
A February 2024 Facebook video claims that Operation Highjump (1946–1947) was a military mission to find out what lay beyond the "ice wall" of Antarctica.
- False claim Operation Highjump was to explore Antarctic 'ice wall' | Fact check, USA TODAY (Gabrielle Settles), via Yahoo News Canada, 8 March 2024
Operation Highjump was a mission to find out what was beyond the 'ice wall' of Antarctica
- False claim Operation Highjump was to explore Antarctic 'ice wall' | Fact check, USA TODAY (Gabrielle Settles), via Yahoo News Canada, 8 March 2024
- Thesis
Many flat-Earthers claim the 1959 Antarctic Treaty bars civilians from going there, so that no one can discover what lies on the other side.
- Debunking the biggest Antarctica conspiracy theories, Sky HISTORY
the powers that be are preventing any of us from discovering what's on the other side.
- Flat Earthers Travel To Antarctica To Test Theories, But Are Quickly Humbled, IFLScience (Tom Hale), 17 December 2024
Flat Earthers often like to claim that the Antarctic Treaty of 1959 prevents civilians from visiting
- What happened during flat-Earthers' Final Experiment in Antarctica, IFLScience (James Felton), 4 September 2025
Some flat-Earthers believe that the Antarctic Treaty of 1959 prevents them from visiting the continent.
- Debunking the biggest Antarctica conspiracy theories, Sky HISTORY
- Thesis
Related stories turn Highjump into a battle: Admiral Byrd was supposedly driven out of Antarctica by saucers from the Hollow Earth, or sent to attack a secret Nazi base.
- Frozen Fridays: 'Q' is for Questionable Theories!, Ohio State University Archives, From Woody's Couch (John Hooton), 10 March 2017
Some believe that our own Admiral Richard E. Byrd was forced to retreat from Antarctica by saucers
- Hitler's Antarctic base: the myth and the reality, Polar Record, Cambridge University Press (C. Summerhayes, P. Beeching), January 2007
construct a myth of a large German base existing in Antarctica and of allied efforts to destroy it
- Frozen Fridays: 'Q' is for Questionable Theories!, Ohio State University Archives, From Woody's Couch (John Hooton), 10 March 2017

Verified facts
- Verified fact
Operation Highjump, organised by Rear Admiral Richard E. Byrd as his fourth Antarctic expedition, ran from 26 August 1946 to late February 1947 with 4,700 men, 13 ships and 33 aircraft; its job was to set up Little America IV on the Ross Ice Shelf and train the Navy in cold conditions.
- Operation Highjump, Wikipedia
Operation HIGHJUMP commenced 26 August 1946 and ended in late February 1947.
- Richard E. Byrd, Wikipedia
Byrd's fourth Antarctic expedition was code-named Operation Highjump.
- Opération Highjump, Wikipedia
Elle fut lancée le 26 août 1946 et dura jusqu'en 1947.
- Operation Highjump, Wikipedia
- Verified fact
In an interview with Lee van Atta published on 5 March 1947 in the Chilean newspaper El Mercurio, Byrd drew lessons from the operation: the United States could be attacked by planes flying over one or both poles.
- Operation Highjump, Wikipedia
The interview appeared in the Wednesday, March 5, 1947, edition of the Chilean newspaper El Mercurio
- Operation Highjump, Wikipedia
- Verified fact
There is no evidence Highjump was sent to investigate an "ice wall"; the expedition ended in late February 1947 because of the early approach of winter and worsening weather.
- False claim Operation Highjump was to explore Antarctic 'ice wall' | Fact check, USA TODAY (Gabrielle Settles), via Yahoo News Canada, 8 March 2024
There is no evidence it was sent to investigate an "ice wall."
- Operation Highjump, Wikipedia
the expedition was terminated due to the early approach of winter and worsening weather conditions.
- False claim Operation Highjump was to explore Antarctic 'ice wall' | Fact check, USA TODAY (Gabrielle Settles), via Yahoo News Canada, 8 March 2024
British Pathé
