Polybius boldly declared that 'now that all places have become accessible by land or sea, it is no longer appropriate to use poets and writers of myth as witnesses of the unknown' (4.40.2). And yet, in reality, the significance of myth did not diminish as the borders of the known world expanded. Storytelling was always an inextricable part of how the ancient Greeks understood their environment; mythic maps existed alongside new, more concrete, methods of charting the contours of the earth. Specific landscape features acted as repositories of myth and spurred their retelling; myths, in turn,...