What if the visitors aren't from space, but from beneath our feet?
In short: The cryptoterrestrial hypothesis suggests that UFO sightings aren't evidence of interstellar travelers, but of a hidden, technologically advanced civilization living right here on Earth. From hollow worlds to deep-sea empires, this provocative thought experiment challenges our very definition of 'alien' by looking inward rather than upward.
The cryptoterrestrial hypothesis proposes that unidentified flying objects are actually craft from a terrestrial, yet hidden, civilization. While many associate UFOs with extraterrestrial life, scholars like Aaron John Gulyas note that the idea functions more as a thought experiment to raise difficult questions. This concept has deep roots in 19th-century fiction and occultism, ranging from Jules Verne’s 1864 subterranean journeys to theosophical tales of superhuman masters in the Tibetan mountains.
In the mid-20th century, the idea gained a more specific, albeit controversial, form through Richard Sharpe Shaver. Writing in the magazine *Amazing Stories* starting in 1945, Shaver claimed to be in contact with subterranean beings using disc-shaped craft. While his editor, Raymond Palmer, promoted these claims as proof of a 'flying disc flap' in 1947, Palmer later admitted that Shaver had actually spent eight years in a mental institution being treated for paranoid schizophrenia.
The hypothesis has evolved through various iterations. In the 2000s, author Mac Tonnies coined the specific term 'cryptoterrestrial' to describe these hidden, indigenous humanoids, contrasting them with the 'ultraterrestrial' theories of the 1970s. Modern pop culture continues to play with these themes, from the deep-sea advanced civilizations in the 1989 film *The Abyss* to the hidden, technologically superior Wakandans in Marvel's *Black Panther*. Whether viewed as a scientific possibility or a narrative device, the hypothesis forces us to reconsider the boundaries of our known world.
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- Summary by Intellect · source: Cryptoterrestrial hypothesis
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