The Cigudosa-San Felices Nature Area Nature · Castilruiz, Moncayo, Soria Image of Castilruiz, not of the place itself. This site of community importance occupies 817 hectares of the municipal district, a fifth of the municipality, and protects the cliffs and banks along which the Añamaza runs down towards the Alhama valley. Photo: Manuel Lampre (CC BY 3.0) What to see and do in Castilruiz