The Portuguese oak groves of Villar del Campo Nature · Villar del Campo, Frentes, Soria Image of Villar del Campo, not of the place itself. 38% of the municipal district, some 958 hectares, forms part of the site of Community importance of the Portuguese oak and holm oak woods of the Sierra del Madero, the most extensive forest mass in this eastern corner of Soria. Photo: Miguel Ángel García. from Ólvega., España (CC BY 2.0) What to see and do in Villar del Campo