Parco dei Gessi Bolognesi e Calanchi dell'Abbadessa

Among large meadows and cultivated fields alternating with shrub formations, a thin strip of hygrophilous vegetation marking the course of rio Acquafredda stands out. The valley is closed by a prominent wall, along which the powerful chalky stratifications are evident: here the complex subterranean system Acquafredda-Spipola begins. In the woodland surrounding the swallow hole, rare species like the Hart's Tongue Fern and the Snowdrop grow.