The Holm Oak Groves of the Sierra del Costanazo Nature · Torrubia de Soria, Campo de Gómara, Soria Image of Torrubia de Soria, not of the place itself. This Natura 2000 site protects 896 hectares of holm oak wood in the municipal district, to which is added the special protection area for birds of the Altos Campos de Gómara, on a plateau at more than a thousand metres. Photo: Jaime Calatayud (CC BY-SA 4.0) What to see and do in Torrubia de Soria