It is a traditional core consists of a series of houses that are abandoned. In these traditional building systems are seen , both in homes and outbuildings . It is made ​​with masonry walls and ashlar granite and tile roofs , although in some specific cases more traditional system cover the area , based on overlapping slabs of shale remains . Many of the houses consist of a ground floor and first floor , many with balconies and solainas . Several preserved granaries , grouped in a eira , common in mountain areas .