Martiñá Heights Nature · San Cristovo de Cea, Carballiño, Ourense Image of San Cristovo de Cea, not of the place itself. At 1,039 metres it is the highest point in the municipality, in the north-eastern sector belonging to the Serra do Faro system, where the Alledo also rises, at 1,011; the Mirela, Oseira and Barbantiños rivers come down from there. Photo: José Antonio Gil Martínez from Vigo, Spain (CC BY 2.0) What to see and do in San Cristovo de Cea