The Via Domitia linked the Alps with the Pyrenees, and is the oldest Roman Road in Gaul, more specifically Gallia Narbonensis in France. Laid out by Cneius Domitius Ahenobarbus around 120 BC, it was to become part of the roads that linked Italy with Cadiz in Spain. At Ambussum the Via Domitia crosses the Vidourle, and the settlement provided a staging post on this road. Directly adjacent to the site, the modern A9 autoroute, the "Languedocienne" crosses the Vidourle and at this point there is the modern day equivalent of a mutatio, the Aire de service de Lunel. The site is reached through the village of Villetelle.