Cliffs of Barreiros Nature · Barreiros, Mariña Oriental, Lugo Image of Barreiros, not of the place itself. The municipality has some eight kilometres of cliffs above the Cantabrian Sea and another four of shore already inside the Foz estuary, a contrast between rock wall and estuary that is unusual in so few kilometres of coast. Photo: Eduardo R.C. (CC BY-SA 2.0) What to see and do in Barreiros