 The visitable area contains two such roads, the Via dei Monti Ceriti and the Via dei Monti della Tolfa (6th century BC).The tumuli are circular structures built in tuff, and the interiors, carved from the living rock, house a reconstruction of the house of the dead, including a corridor ("dromos"), a central hall, and several rooms.Modern knowledge of Etruscan daily life is largely dependent on the numerous decorative details and finds from such tombs.