Overview
On July 21, 1969, one day after Neil Armstrong stepped onto the Moon, a Hungarian-Argentine explorer named János Móricz — Juan, to the Ecuadorians who knew him — walked into the fourth notary office in Guayaquil and signed a document. It recorded a discovery he said belonged to all of mankind. Deep inside the Cueva de los Tayos, in the Amazonian foothills of Morona-Santiago province, he claimed to have found a library made of metal: tablets of gold and other alloys, engraved with the real history of the human race and the science of a civilization that had disappeared. His lawyer and friend, Gerardo Peña Matheus, later described the notarized deed as the thing that made Móricz the caves' official discoverer, never mind that the Shuar had known the place for generations. The cave itself is named for the tayo, the oilbird that nests in its dark chambers by the thousand.
What Móricz never did was say where in the cave the library sat. He wanted terms first. The claim traveled anyway, and within a few years it had left Ecuador entirely.
The book that carried it around the world
Erich von Däniken did the carrying. His The Gold of the Gods, published in German in 1972 and in English the following year through Souvenir Press, told the story in the first person: the Swiss author descended into the tunnels alongside Móricz, walked halls stacked with gold, and stood before the metal tablets he read as an archive of extraterrestrial knowledge. The book sold in enormous numbers and fixed the cave in the popular imagination as a vault of ancient secrets.
Then Móricz told Der Spiegel there had been no such expedition. The vivid descriptions, he said, came out of a long conversation, and the photographs in the book had been "fiddled." "Däniken was never in the caves," he told the magazine, "unless it was in a flying saucer." Pressed in a 1974 Playboy interview, von Däniken did not fully retreat. A writer who is not producing pure science, he said, is allowed some dramaturgische Effekte — theatrical effects — and that is what he had done. In a later book he placed himself only in a side cave, the library itself described to him across a restaurant table rather than seen with his own eyes.
What the 1976 expedition turned up
Stan Hall, a Scottish civil engineer who had read von Däniken and wanted to settle the question on the ground, assembled one of the largest cave expeditions ever mounted. In July 1976 more than a hundred people converged on the site: British and Ecuadorian soldiers, professional speleologists, scientists across several disciplines, a film crew, and funding from both governments. Neil Armstrong served as honorary president and went underground himself, a man who had walked on the Moon now in a hard hat beneath the Ecuadorian jungle.
Over several weeks the team mapped the passages and catalogued what it found. There was a great deal of it, and almost none of it matched the legend. New species of bats and insects. Ceramic fragments, stone structures, a human burial the expedition dated to roughly 1500 BCE, sections of passage that looked cut and smoothed. Real zoology, real archaeology, real prehistory. No shelves of yellow metal, and no books of gold.
The believers' answer, and Father Crespi
The response from those who held to Móricz's account was direct: wrong entrance. His informant, the story went, had told the expedition it was searching the wrong opening of a much larger system, and the true chamber remained sealed off from the visitors. Because Móricz had never disclosed the location in the first place, there was no way to test the claim against him.
Feeding the legend from the nearby city of Cuenca was Father Carlo Crespi, a Salesian priest whose cluttered collection of metal plaques and carvings drew pilgrims and reporters alike. Local people, he said, had brought the pieces to him over the years. To believers they were relics of the metal library surfacing above ground; to others they were folk craft and market trinkets. The collection kept the story warm long after the 1976 cameras had gone home.
Where it stands
Móricz died in 1991 without ever leading anyone to the shelves he had sworn to before a notary. Stan Hall stayed with the puzzle for the rest of his life, wrote a book about it called Tayos Gold, and died in 2008; his daughter Eileen Hall has continued the research since, and the cave keeps a presence through the tayos.org project. Access now runs through the Shuar, whose land holds the entrance.
The cave is real, and long, and genuinely difficult to reach. The oilbirds are still there. What has never surfaced is a single one of the metal tablets, and the strongest case for them remains a legal document filed the week of the Moon landing — a claim of discovery, not a photograph of a shelf.