Pierre Martine, located near Livernon.
The cap-stone measures 22 feet by 11 feet, and is 16 inches in thickness, and was so balanced on its two points of support that a slight pressure of the hand was sufficient to set it oscillating with a motion which it retained for some time. Alas this broke under it’s own weight and had to be concreted. This curiosity, which has puzzled many people, eventually giving rise to a legend depicting Saint Martin, the evangelist Gaul.
Image credit: 'La France monumentale et picturesque' - Bonstetten 1865
