On a Sunday in March 1994 the director of the Prehistoric Museum of Pofi, Italo Biddittu, went to view the works not far from the center of Ceprano, where in the past he had already identified traces of prehistoric frequentations. As he watched the road in progress, he noticed that the excavations had damaged the geological layers of an area he knew quite well, and spotted a fragment of flat bone on the ground. The find had become visible due to recent rains: he collected it, and subsequently discovered other fragments, all belonging to a fossil human skull that was later called Argil or Homo cepranensis. The discovery has also become known among non-specialists thanks to the news published in popular science periodicals, such as National Geographic and Le Scienze.