In 2010 the municipality enlarged the protected area by identifying an outer, lessened protection strip of about 800 hectares comprised between the Fucine basin and the Palentine Plains, established with the purpose of protecting the environmental, historical and cultural aspects of the whole area, including the Tunnels of Claudius, the Cave of Ciccio Felice, the river park of the Inlet, some zones and structures of the former Avezzano sugar mill and the Rafia Torrent (or La Raffia) near Cese dei Marsi.