Category of Astronomical Heritage: dark skies
Western Alpine and Grana Valley Sky Sanctuary, Italy
a) Google aerial view of Piedmont area. b) Night view of piedmont with buffer and core zone. c) Grana Valley with boundaries of the Core and Buffer Zone. d) Core Zone: Municipal area of Castelmagno. Blu line identifies Cuneo district, the yellow line the Buffer Zone, the green one the Core Zone.
Rock engravings in Valle Grana, locality “La Costa”, just above the village “Campo Fey” at an altitude of the sea 1624m.
The Sanctuary of San Magno was founded in 1475 on a pre-Christian pagan place of worship, as evidenced by the Roman altar dedicated to Mars, now kept in the church.