praia da marinha beach among rock islets and cliffs seen from seven hanging valleys trail, algarve, portugal

portugal algarve cliff praia marinha benagil cave arch seven hanging valleys trail hole sky beach nature landscape lagoa water erosional landform rocky caramujeira calcareous rock limestone sandy coast geology view notch rudstone eroded bluff seashore pillar crag islet carved shoreline rugged sea wave whitish golden sand mesquita