Olavarria, Arg being encounter — July 4, 1968

The fuller Sierra Chica account identifies the boy as Oscar Heriberto Iriart, riding on his family's land near Olavarría in July 1968. The imported entry uses July 4 and 1 p.m.; early accounts and later historical reviews instead put his experience on July 2, around late morning. Two figures reportedly beckoned him toward a small disc beside a drainage ditch. Iriart described short white hair, red clothing, unusual eyes, and legs through which he thought he could see grass. He said the figures spoke Spanish, offered future travel, and gave him an envelope with a brief message, asking him to put it in water. After their departure, he returned home on horseback. Three holes arranged in a triangle were subsequently interpreted as landing impressions. A separate nighttime group, including police sergeant Raúl Coronel, reported a low zigzagging light; they did not independently witness Iriart's conversation. The letter became a central problem. Historical reporting describes ordinary paper that failed a water test and handwriting matching the boy's. A later investigator also connected the holes with fence-making materials, although Iriart maintained his story and no confession is supplied. Those concrete objections matter more than simply labeling the boy unreliable. The plate reconstructs the disputed daytime claim, including its humanlike red-clothed figures and small craft, without presenting the message or ground holes as authenticated extraterrestrial evidence.