Conspiracy Theories surrounding Antarctica have also been important to the recent Flat Earth craze, hijacking claims originally made about Admiral Bird by Hollow Earth theorists.
Thing is I have my doubts these real life fringe theories about something mysterious in Antarctica predate the known Fiction on the subject.
It begins at least as early as Edgar Allen Poe's The Narrative of Arthur Gordon Pym of Nantucket (1838) .
Jules Verne then wrote a sequel to that called Le Sphinx des glaces, The Sphinx of the Ice Fields. Where Antarctica has a Sphinx rather then a Pyramid.
The French Wold Newton Universe authors love expanding on these stories and tying them into other fiction.
The Novel Who Goes There, which inspired The Thing from another World and it's remakes, speculates an Alien presence in Antarctica.
Another story to draw directly on Poe's was H. P. Lovecraft's At The Mountains of Madness.
And at least one Anime is relevant to this topic, Neon Genesis Evangelion. I think there might be at least one other that involved something in Antarctica, I'll have to think about it.
I don't have anything in depth to say, I just want to spread awareness of it.