Along the national road n. 26, in the proximity the village ofAvise, where nowdays stands a tunnel, the ancient Roman road of Gauls had to deal with a fearful bottleneck, which Roman engineering got around by cutting through the rock: it is the bottleneck of “Pierre Taillée”.

The area was also suitable for military surveillance, and this is why, above the tunnel, it is still possible to observe the remains of the fortifications which played a significant role during the French invasions of 1691 and 1704-1706.