Yew forest of Casaio Nature · Carballeda de Valdeorras, Valdeorras, Ourense A wood of some two hectares at 1,350 metres, in the Pena Trevinca massif, with more than four hundred yews of great age living alongside rowans, hollies, ash and hazel; it is the only yew wood of its kind in Galicia. Photo: Sethfromsomewhere (CC BY-SA 4.0) What to see and do in Carballeda de Valdeorras