• Piedmont

• Regional Nature Reserves

Oropa valley represents the evocative environmental and landscape frame where the complex of Oropa Sanctuary and Sacro Monte is situated. As far as environment is concerned, besides the interesting presence of nard formations on a siliceous substratum particularly rich in species and of beech tree woods, it houses the richest and most interesting carabid fauna of Piedmont both for endemic species and richness in species and for the density of populations.