You leave Laon to join Corbeny towards region Champagne.

You will pass by Bièvres, “green station” in which there are underground stone quarries and the church Saint-Pierre with the bell tower covered with slates. A particularly interesting village is Bouconville-Vauclair, where the Vauclair abbey is located, the castle of the Bôve and a network of trenches of the First World War. Finally, in Corbeny, you will see the Saint-Marcoult Oratory.