The ‘sasso spungone’ is a unique outcrop of karstic rock representing the remains of a 3.3-million-year-old underwater cliff, rich in marine fossils of considerable geological interest.
The particular geological layering and the soil’s chemical and mineral composition have greatly influenced local agricultural production, particularly wine and olive oil production.
The natural site where Rupe dei Cozzi is located, forming the largest outcrop of spungone stone in the area, is immersed in an oasis of peace, in a flourishing and evocative natural setting.
It is possible to walk along Rio Cozzi to explore this particular type of calcareous sandstone rock, from which the thermal waters of Castrocaro Terme flow; it emerges alongside the River Park and in the Castrocaro Fortress, which stands on a rocky wall of Spungone stone, clearly visible inside the Medicean Arsenals.
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