The menhirs on the ground

"Two menhirs are lying on the ground just before the Col de l'Agulharon. One has three cup marks (circular hollows), one of which is the size of a bowl. Many schist slabs with cup marks have been identified in the  Cévennes. These carvings, whose meaning escapes us, have been attributed to the Neolithic, as have the menhirs. The stone with cup marks is known as “the baptism stone”. When the Edict of Nantes was revoked in 1685, making it illegal to practice Protestantism in France, many Protestants refused to convert. They waited for a pastor to visit to receive the sacraments. This stone was allegedly used to baptise children.” (P. Grime)