VISIT OF THE OLD CHALK MINES

Underground tunnels dug in the chalky rock, spread over five levels and tens of kilometers. Unique in the world, this labyrinth comes from an old chalk mine, whose exploitation started at the beginning of the 13th century and continued for hundreds of years. Forgotten until the collapse of a road in 1960, the labyrinth was soon opened to the public. During the visit, geological, archaeological and historical exhibitions follow one another.