La Roche-Cotard I is a natural cave that opens to the south in the tufa cliff of the south bank of the Loire. It has several corridors, for a total development of about 60 m, and a second opening located about 15 m west of the main opening. In 1912, François d'Achon discovered a series of animal bones and flint. The bones were found near the main entrance of the cave. They correspond to several species of mammals: bison, bears, horses, hyenas, rhinos, marmots, and various deer. The flints, about a hundred copies, were found towards the end of the first corridor: punches and axes of the Acheulean type, knives, scrapers, and points of Mousterian type.