The Ciappo dei Ceci (whose name derives from the dialectal term "erxi" or holm oaks) is a slab of calcareous rock of about 300 square meters located on top of the Bric Spaventaggi where numerous prehistoric engravings have been found as well as channels and tanks to convey rainwater. The square or circular cup-marks and the grooves on the rock that join them find controversial interpretation: some consider them to be astronomical or water maps or even indicating a cartography of the places, others believe they are connected to sacrificial rites.
The Ciappo delle Conche (whose name originates from the dialectal term "cunche" meaning basin) situated on the southern slope of Monte Cucco, like the previous one is a limestone slab of 500 square metres with rock engravings depicting geometric figures of difficult interpretation; the most famous are the "train" and the "sailing ship" next to which appear anthropomorphic cruciformes (perhaps stylized human representations). The "conche" are the small basins (square round rectangular ones) which are connected or fed by rivulets and give the rock an unusual appearance. There are ten basins and between them a series of channels have been sculpted to collect rainwater and bring it into basins even of considerable size to make up for the lack of water sources and water the livestock, as well as attracting wild animals, becoming a good hunting spot