In this article, aimed at identifying the real location of the mythical Pillars of Hercules, it is first verified that in the works of Plutarch and Plato there are correct references to a continent beyond the Atlantic Ocean. Plutarch mentions a “great continent” surrounding the Atlantic Ocean and the islands that lie on that route, and then focuses on an ancient settlement of Europeans, called "continental Greeks", in the Canadian region of the Gulf of St. Lawrence, of which he indicates the latitude with astonishing precision. But already a few centuries earlier Plato, in addition to declaring himself certain of the existence of a continent beyond the Atlantic, had mentioned the islands along the route to reach it, also specifying
