Pascal Laillé will make you discover an unusual object from the background of the ages: a horizontal sundial and a cupola stone of the Bronze Age. The cupola stone is erected in front of the church of Montgirod; it is not its itinial place, although it was discovered in this commune. It has circular shapes and grooves. The function and use of the cupola stones remain poorly mastered, some seem figurative, other utilitarian (ritual libations, astronomical devices, border reporting...).