The Tetas de Cayey Cave Body
In Claimed late 1970s, popularly tagged 1979, near Tetas de Cayey, between Cayey and Salinas, southern Puerto Rico, the story, as Puerto Rican investigator Jorge Martin tells it and as Michael Hesemann reprinted it in the German periodical Magazin 2000 No. This case file covers what witnesses reported, the official narrative, and a two-pass assessment with its evidence tier.
What did witnesses see at Tetas de Cayey?
The story, as Puerto Rican investigator Jorge Martin tells it and as Michael Hesemann reprinted it in the German periodical Magazin 2000 No. 109 in February 1996, begins with two boys on a night fishing trip in the rugged country around the Tetas de Cayey, the twin breast-shaped peaks that straddle the boundary between the municipalities of Cayey and Salinas on Puerto Rico's southern spine. One of the boys is named in the accounts as Jose "Chino" Zaya. The pair wandered into a series of caves cut into the hillside and, the story goes, were startled by several small living beings that had apparently made one of the caves their temporary shelter.
According to the account, one of the little creatures seized Zaya by the leg. He grabbed a stick and beat it about the head until it stopped moving, killing it, and the boys carried the body away. Zaya is said to have had some elementary knowledge of science and put the dead thing into a jar of formaldehyde at his home. The being is described as slightly over twelve inches long, extremely thin, with an oversized skull that had been almost destroyed by the blows and eyes that were too large for its head.
A few days later, frightened that the other creatures might come looking for their dead companion, Zaya reported the matter to the local police. The officer named in the story is Osvaldo Santiago, attached to the Las Ochentas headquarters near Salinas, who is said to have come and looked at the jar. From there the chain widens. Santiago's wife is said to have told a local businessman about it. The businessman, who wanted his name kept out of it, took the jarred specimen to be looked at by an academic and is the one who reportedly photographed it. Those photographs, watermarked by Jorge Martin and dated 1995, are the only physical trace of the case that survives. They show a small, dried, reddish-brown lump of tissue or matter standing on a base against a plain reddish background. It does not obviously read as a twelve-inch humanoid with huge eyes; it reads as a small, shrivelled, unidentifiable mass.
What is the official explanation?
There is no official record of this event anywhere, and that absence is one of the defining features of the case. No contemporary Puerto Rican newspaper from the late 1970s, neither El Nuevo Dia, nor El Vocero, nor El Mundo, has ever been shown to carry a report of a fatal cave encounter with small beings near Cayey or Salinas, of a body in formaldehyde, or of a police officer named Osvaldo Santiago handling such a thing. No surviving police blotter from the Las Ochentas station, no University of Puerto Rico departmental record, and no government document of any kind has ever been produced. The whole account rests on the testimony of one investigator gathered, by his own framing, years after the fact.
The one academic voice in the story is Professor Calixto Peres (also rendered Perez), described as a chemist at the University of Puerto Rico, who is quoted looking at the jar and saying, "In my opinion it is something extraterrestrial. Its cranium is far too big for the body, which is small and skinny, and its eyes were too big." That is an opinion offered on visual inspection, not a documented laboratory examination. No analysis report, no chain of custody, no peer-reviewed note, and no institutional paperwork tied to Peres and this specimen has ever surfaced, and the man himself has never been independently located in connection with the case.
A frequently repeated citation needs to be retired. The UFO Casebook page that popularized the story in English carries the line "Flying Saucer Review, Library of Congress copyright FSR Publications, Ltd. 1981," and that has been read as meaning the case was published in Flying Saucer Review in 1981. It was not. The actual contents of Flying Saucer Review Volume 26, Number 6, published March 1981, are on record: articles by Emma Popik, by Bill Chalker and Keith Basterfield on the Rosedale landing in Australia, by Nikita Schnee on a Russian contact case, on UFO events around Ashbourne in Derbyshire, by Juan Jose Benitez, Dr O. A. Galindez on the Villa Carlos Paz entity in Argentina, Stuart Campbell on a Loch Ness false report, and Jenny Randles on repeater witnesses. There is no Puerto Rico cave-creature article in that issue or, by the surviving FSR indexes, in any 1981 issue. The "FSR 1981" line is a stray copyright credit that has been mistaken for a source. The genuine first publication of this case is Magazin 2000 No. 109, February 1996, sourcing Jorge Martin, roughly sixteen to eighteen years after the event is supposed to have happened.
The nearest thing to an official media touchpoint is a 2015 WAPA-TV Noticentro segment on the El Yunque UFO controversy, picked up for international distribution by the Associated Press, which referenced the Salinas alien-body story and stated on air that it had never been confirmed whether the account and the photographs were genuine or simply another hoax. That is a broadcaster flagging the claim as unverified, not an investigation that resolved it.
What did the witnesses think it was?
The case has, in practice, one witness who matters: Jorge Martin himself, the Puerto Rican journalist and UFO investigator who collected the story, obtained the photographs, and published them. Born in 1952 and a fixture of Caribbean UFO research since the mid-1970s, Martin is the source for almost everything famous about Puerto Rican UFO lore, from the El Yunque "stargate" claims to the underwater-base claims to the chupacabra. He believes the Tetas de Cayey specimen was a genuine non-human, non-terrestrial creature and presents the professor's verbal opinion and his own photographs as the supporting evidence.
The named human links in the chain, the boy Jose "Chino" Zaya, the officer Osvaldo Santiago, the unnamed businessman, and Professor Calixto Peres, exist only inside Martin's account. None of them has ever given an independent, on-the-record statement that has been preserved and is checkable today. There is no second investigator who examined the jar, no corroborating photographer, no relative or neighbor quoted by name in a contemporary source, and no chain of custody for the body, whose whereabouts every version of the story admits are now simply unknown. What looks at first like a rich roster of witnesses collapses, on inspection, into a single sourced narrator relaying what others supposedly told him.
That single-narrator structure has to be weighed against Martin's wider record of presenting biological "alien" evidence that did not survive scrutiny. In his chupacabra reporting he announced that captured creatures had been blood-tested and that the results were "in no way compatible with human blood nor with any animal species known to science," with trace ratios of magnesium, phosphorus, calcium and potassium "much too high," concluding the sample "could well be the product of a highly sophisticated genetic manipulation, an organism alien to our own environment or perhaps extraterrestrial." When mainstream scientists actually examined chupacabra carcasses, they identified them as ordinary canids, dogs and coyotes with mange. The pattern is the relevant context here: a researcher who repeatedly frames unverifiable specimens as extraterrestrial, and whose extraordinary biological claims have been mundane where they could be checked.
The dispute
The dispute is straightforward to state and impossible, on present evidence, to close in either direction. The counter-explanation, advanced implicitly by the mainstream press and explicitly by skeptics of Jorge Martin's body of work, is that the Tetas de Cayey "alien" is folklore plus a small unidentified specimen, not a recovered extraterrestrial. The strongest concrete points against the case are documentary. First, the headline provenance is false: the often-repeated "Flying Saucer Review, FSR Publications 1981" credit does not correspond to any FSR article, and the genuine contents of FSR Volume 26 Number 6 (March 1981) are on record with no Puerto Rico cave-creature piece. The case actually debuts in Magazin 2000 No. 109 in February 1996, with Martin's photograph watermarked 1995, roughly two decades after the alleged 1970s event. Second, there is no contemporary corroboration of any kind: no newspaper, no police record, no university record, and no named witness on the record outside Martin's own retelling.
Who advanced it and how. Puerto Rico's WAPA-TV Noticentro, in a 2015 segment on the El Yunque UFO flap that the Associated Press redistributed, referenced this Salinas "alien body" and told viewers it was never confirmed whether the story and the photographs were real or a hoax. That is the local broadcaster who would know the case best openly treating it as unresolved and possibly fabricated. The wider skeptical case rests on pattern and on the specimen's appearance. Martin has a documented history of presenting unverifiable biological "alien" evidence: in his chupacabra reporting he claimed blood tests showed a creature "in no way compatible" with any known animal and "perhaps extraterrestrial," whereas scientists who examined actual chupacabra carcasses identified ordinary dogs and coyotes with mange. The single surviving photograph shows a small, dried, reddish-brown mass that does not visibly match the described big-eyed twelve-inch humanoid and is consistent with a desiccated animal specimen or a model.
Why it does not fully close the case. None of this is a method-shown discredit. No one has produced a confession from Zaya or Martin, recovered a hoax prop, or run a forensic identification of this specific object, because the body itself disappeared and no independent investigator ever examined it. The professor's "extraterrestrial" opinion was never a lab result, but its absence does not prove fabrication, only that the claim was never tested. The folklore and pattern arguments are powerful as context and as a probable explanation, yet they remain reconstructions of how the case could be ordinary rather than a demonstration of what the object actually was. Because the dispute is an unproven natural-explanation reconstruction plus a broadcaster's hedge, with no recovered specimen, confession, or positive identification, it sits at Barely Disputed rather than Strongly Disputed. The claim is thin and very likely mundane, but it has not been positively dismantled.
Is the Tetas de Cayey Cave Body real? The two-pass assessment
Pass one, the ordinary reading. Nothing about this case requires anything stranger than folklore plus a small unidentified lump of organic matter. The Tetas de Cayey sit in deep rural country soaked in the Puerto Rican duende tradition, a centuries-old island belief in tiny humanoid forest and cave spirits, and a story about children meeting little men in a cave is the most natural shape that folklore can take. The "body" itself, in the only photograph that exists, is a small reddish-brown shrivelled object that could be a desiccated animal fetus, a malformed or partial small-animal carcass, a dried marine specimen, or a constructed model; it does not visibly match the twelve-inch big-eyed humanoid the words describe. The supporting evidence is a chemist's eyeball opinion with no lab work behind it and no documentation that the examination happened. The entire account surfaces no earlier than the mid-1990s, with Martin's own photo watermarked 1995 and first print appearance in February 1996, for an event placed vaguely in the 1970s, and it leaves no trace in any newspaper, police file, or university record from the time. The widely cited "Flying Saucer Review 1981" provenance is demonstrably wrong: that issue's contents are on record and contain no such article. Add Martin's documented habit of declaring unverifiable specimens extraterrestrial, most visibly the chupacabra "blood tests" that real scientists reduced to mangy dogs, and the simplest explanation is a folklore-shaped anecdote built around a small unidentified specimen, possibly a hoax, that entered the literature in the 1990s.
Pass two, if it were real. If a genuinely anomalous twelve-inch biological organism with a grossly oversized cranium and outsized eyes was beaten to death in a cave and preserved in formaldehyde, it would be one of the most important physical specimens in the history of the subject, a recoverable body that DNA sequencing and comparative anatomy could settle in an afternoon. That is exactly why its disappearance is so damaging to the claim: the one thing that could prove the case is the one thing nobody can produce.
The tier. This is a single-source, unverifiable claim with a false provenance citation and an open hoax question raised even by local television. But, and this is the binding distinction, no one has actually shown the discrediting method. There is no confession from Zaya or Martin, no recovered hoax prop, no recovered model, and no positive forensic identification of this specific object as a known fetus, animal, or fabricated piece, because the object itself vanished and no independent analyst ever examined it. The 2015 broadcast calling it "possibly a hoax" is a media hedge, not a demonstration. The duende-folklore and Martin-pattern arguments are strong circumstantial context, but they are reconstructions of how it could be ordinary, not proof of what it was. Under this archive's rules, a contested-but-unproven natural explanation and an official-or-media assertion without a shown method land a case at Barely Disputed, and that is where this one sits: the claim largely fails on its own thinness rather than on any decisive debunk, and it would move to Strongly Disputed only if the specimen, a confession, or a named fabrication method ever surfaced.
Sources
- www.ufocasebook.com/puertoricanalien.html
- newsroom.ap.org/editorial-photos-videos/detail?itemid=fcaa3d1a02d9546e6718b3c5faa212d3&mediatype=video
More cases from this region: UFO sightings in Puerto Rico
