Parco Naturale Regionale dell'Aveto

"Pietra Borghese" in Pratomollo is an imposing boulder of peridotite, that is a mineral rich in iron which has magnetic properties (if you get close to the rock with a compass, you will see that the needle changes direction). Its size and this particular feature have fostered the legend according to which the Stone was a fragment of meteorite fallen from the sky. Now we know that its origin is completely different, and that it is similar to the origin of the rocks scattered in the territory, like "Roccia del Fulmine" (above Agoraie Nature Reserve), which tends to attract lightnings for its composition.