1. Within the territory of the municipality we can find the Spipola Cave with its doline and the chalky rock emergences of the Farneto and the Croara, that give shape to a karst compound (there are about 50 caves and natural hollows crossed by a 6-kilometre (4 mi) long hypogeous stream), protected by the Parco dei Gessi Bolognesi e Calanchi dell'Abbadessa (Natural park of Bologna's chalky rocks and the Abbess's gully).