The landscape is characterized by barren and gently undulating hills, solitary oaks and cypresses, isolated farms on top of the hills, stretches of wood in the valleys, fountains that collect rainwater. The name derives from the clay, or clay, present in the soil, which gives the landscape its characteristic blue-gray color and an appearance often described as lunar.

The most beautiful view of Tuscany with the cypress avenue immersed in the Tuscan hills