Also called Fort Morlot, and located south of the plateau, it was built in 1878 by Séré de Rivières in order to establish military communications with the forts of the Laonnois.
An optical telegraph operating with a kerosene lamp and a set of mirrors capturing and directing the sun’s rays, allowed messages to be transmitted to six surrounding forts, messages that were invisible to the enemy below.
From the top of this hill, do not miss the beautiful panorama on the lower town of Laon and the Chemin des Dames!