The Sar valley in Rois Nature · Rois, Sar, A Coruña Image of Rois, not of the place itself. The river Sar crosses the concello from the six metres of altitude of its bed to the 609 of Monte Pedregal, a difference in height that explains the municipality's mosaic of valley-bottom meadows and scrub-covered hills. Photo: Adrian Farwell (CC BY 3.0) What to see and do in Rois