The Ummo Case: The UFO Hoax That Fascinated Spain

Published on January 05, 2026 | Translated from Spanish
Black and white photograph of a typewritten document with the Ummita symbol, a trident resembling an uppercase U letter, on a desk from that era.

The Ummo Case: The UFO Hoax That Fascinated Spain

During the 1960s and 1970s, an extraordinary phenomenon captured the attention of the Spanish public. Letters and technical documents of unusual complexity began arriving to a select group of people, mainly in Madrid. These texts claimed to come from the Ummites, a civilization originating from the planet Ummo. What surprised the most was the impeccable Spanish and formal style they used, which fueled the idea that these beings already lived camouflaged among humans. 👽

The Plot Expands with Physical Evidence

The phenomenon was not limited to written correspondence. Soon, photographs of alleged spacecraft marked with a distinctive symbol emerged: a trident reminiscent of a U letter. One of the most cited episodes was the San José de Valderas sighting in 1966. The distributed documents were notably dense, full of mathematical equations, physics principles, and technical diagrams. This level of detail led some researchers and ufologists to take the case seriously, weaving a web of intrigue that involved journalists and the curious.

Key Elements of the Hoax:
  • Technical Documentation: Texts with advanced mathematics and physics to give the appearance of scientific authenticity.
  • Ummita Iconography: The trident symbol (U) became the visual signature of all communications and alleged evidence.
  • Localized Sightings: The reported events, such as the one in Valderas, were geographically concentrated, increasing local credibility.
"For such an advanced interstellar race, their ships always seemed to land on the outskirts of Madrid and never, for example, on a beach in Cancún."

Discovering the Truth Behind the Myth

Over time, inconsistencies in the narrative and the clearly earthly style of the texts began to reveal the operation. Persistent investigations and, crucially, subsequent confessions, identified a small group of people as the material authors of the hoax. The central figure turned out to be the Spaniard José Luis Jordán Peña, who admitted his participation. His motivation seems to have mixed an interest in experimenting with parapsychological phenomena and a possible masked social critique.

Consequences and Legacy of the Fraud:
  • Public Resolution: Jordán Peña's admission and others officially ended the mystery, classifying it as a fraud.
  • Cultural Impact: Despite being revealed as false, the Ummo Case left an indelible mark on Spanish ufological and popular culture.
  • Study of the Phenomenon: The case became a classic example of how a well-constructed narrative can deceive and fascinate the public.

A Legacy That Endures in the Imagination

The Ummo Case demonstrated the power of a precisely crafted story. Although dismantled as a complex hoax, its study remains relevant for understanding how modern myths are built and believed. The episode made it clear that, beyond the truth, what endures is the ability of a narrative to capture the collective imagination and generate debate for decades. 🛸