Source of the Limia River Nature · Sarreaus, Limia, Ourense Image of Sarreaus, not of the place itself. The river that orders the whole comarca, identified by the Romans with the Lethes or river of oblivion, rises in the parish of Paradiña, where the Serra de San Mamede to the north meets the Limia depression that opens out to the south. Photo: José Antonio Gil Martínez from Vigo, Spain (CC BY 2.0) What to see and do in Sarreaus