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Alternate Perceptions Magazine, September 2021

The Dionisio Llanca Case Was a Fraud

by: Passage from Luis R. González, Las Abducciones, ¡Vaya Timo!. Pamplona, Spain: Editorial Laetoli S. L. , 2008, pp. 28-29. Translated by Richard W. Heiden with permission of the author.

On October 27, 1973, the aliens hit again, this time outside of Bahía Blanca, Argentina. A truck driver named Dionisio Llanca—whom one paternalistic ufologist characterized as “being innocent, a simpleton,” when in reality he suffered a certain degree of mental retardation—claimed that early that morning, while he was changing a tire, he was surprised by a great brightness from a huge flying saucer and by three beautiful tall blond beings (two men and one woman), dressed in very tight one-piece suits. “Their faces were like ours, but with very high foreheads and elongated eyes,” he asserted. They punctured his left index finger to draw blood, and then he fainted. He awoke a couple of hours later, totally amnesiac, about ten kilometers (six miles) from where his truck had been.

By luck or by misfortune (depending on how one looks at it), the young man fell into the hands of a former actor turned ufologist, Fabio Zerpa, who rapidly organized an impressive medical team to confirm what he wanted. After multiple sessions of hypnosis and narcoanalysis, Dionisio related that he had been taken inside a flying saucer, where he could see how some flexible tubes were deployed that seemed to take up water from a nearby streamlet, and to connect to the post of a high-tension line (à la Herb Schirmer), while the woman produced a hematoma on his eyebrow with a glove full of small nails in the palm.

This impressive medical team gave the case an exaggerated credibility, when in reality it was full of dubious points, as other more skeptical investigators did well to point out.


Fabio Zerpa, a native of Uruguay who had moved to Buenos Aires in 1951, headed the Argentine ONIFE UFO group (the Organización Investigadora de Fenómenos Espaciales, or Investigative Organization of Space Phenomena) and edited its Cuarta Dimensión magazine. I was in the audience at the Acapulco (Mexico) UFO Congress in April of 1977 when Zerpa spoke about the Llanca case. At that time already, an Argentine ufologist’s letter was in the mail to me, exposing the case as a hoax.


See on-line references, including these:

APRO Bulletin, Nov.-Dec. 1973: http://www.ufoevidence.org/cases/case301.htm

APRO Bulletin, July-Aug 1974: http://www.ignaciodarnaude.com/avistamientos_ovnis/Humanoides%201974,Argentina,D.Llanca-4.pdf

Other articles posted by Darnaude via http://www.ignaciodarnaude.com/avistamientos_ovnis/index2.html include FSR articles http://www.ignaciodarnaude.com/avistamientos_ovnis/Humanoides%201973,Argentina,D.Lllanca-3.pdf http://www.ignaciodarnaude.com/avistamientos_ovnis/Humanoides%201974,Argentina,D.Llanca-4.pdf

Rich Heiden

Wednesday, December 06, 2023