The River Mouth Nature · Carnota, Muros, A Coruña The mouth of the River Valdebois right in the middle of Carnota beach, where the fresh water traces meanders across the sand; from there you reach the sands of A Berberecheira and As Cangrexeiras and the marshes. Photo: Ramon Piñeiro (CC BY-SA 2.0) What to see and do in Carnota