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

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