 Not far from the park there are the caves of Pignarelle, forming a rock settlement of Byzantine monastic origin, made by the monks themselves between the 6th and 8th centuries, digging in the sandstone.The complex consists of several caves, the largest of which appears to have a shape of a basilica with three naves with side corridors that form a cross in the shape of a Greek cross, and some tunnels.Testimony of the prehistoric age is also the cave of Pietrosa, the cavity formed by a single large underground environment in which it is a human settlement since the Bronze Age and the Helladic period, as shown by the pottery found in it.