The Roman road connects Sombernon with Alesia and may have been used by Julius Caesar to lead troops to Alesia for the decisive battle against the Gauls under Vercingetorix. Around the turn of the century, it was improved along its entire length (approximately 34 km). For a few years now, it has been marked as a continuous hiking trail to revive its memory and connect it with the present. Art objects have been placed along the route at several points, most notably the so-called "bornes," archaic stone markers at special points. At this marked point at the intersection with the C4 road, four "bornes" (stone houses) stand; it is located roughly halfway along the route.
Despite its straightness, the path is varied, leading through open farmland at the top, but also featuring beautiful forest sections and along the cliff edge near Hauteroche. Even today, this remains an important infrastructure axis, clearly visible from the gigantic 400,000-volt overhead power lines that line the path for a long time. An interesting combination of antiquity and the present.