Roman Road of Agrippa (Saintes–Lyon)
The Roman road from Saintes to Lyon was part of one of the four main routes of the Agrippa road network, established from Lugdunum (modern-day Lyon), the capital of Roman Gaul. This network was developed beginning in 27 BCE under the direction of Marcus Vipsanius Agrippa, a general and son-in-law of Emperor Augustus.
Source: Wikipedia — Roman Road of Agrippa (Saintes–Lyon) (CC BY-SA 4.0)