The river Navea flows into the Bibei shortly before it, in its turn, flows into the Sil, which later flows into the Miño. A whole cannon of waters which connects the Ourense Macizo Central with the biggest river system of the northwest peninsula: the Miño-Sil. All these rivers carved natural corridors with a made-to-measure landscape. The Navea valley is the most untouched. At the entrance to the protected space one of its main attractions can be found: the Navea bridge, built in the Middle Ages on the remains of the old Roman bridge.