Mount Cerengo Nature · San Xoán de Río, Terra de Trives, Ourense Image of San Xoán de Río, not of the place itself. At 1,286 metres it is the highest point in the concello, whose main town already sits at 875 metres; from its summit you look out over the incised valley of the Navea and the native woodland that covers much of the municipal district. Photo: xolopi (CC BY 3.0) What to see and do in San Xoán de Río