The Oak Groves and Holly of Rollamienta Nature · Rollamienta, El Valle y La Vega Cintora, Soria Image of Rollamienta, not of the place itself. The 1,868 hectares of the municipal district alternate oak and ash wood with holly, rockrose, thyme, chamomile and gorse, a mid-mountain plant cover that marks the transition towards the pastures of the Cebollera. Photo: Esther Pérez Pérez (CC BY-SA 4.0) What to see and do in Rollamienta