The rocks of the lower Val Chiavenna are quite low in altitude and are located on the left bank of the Mera. The main group is to Bason, in a panoramic position just at the edge of a trail to the village of Bason of Somagggia, in the municipality of Samolaco.
In the village of St. George, Val Codera, is the southernmost group of rocks in the area chiavennasca. It is also an interesting area for the presence of two slots with maximum tombs linked to channels defluzione. Significant is the name given to the entire area: Churchyard of the Pagans.