river zêzere with old bridge and bouçã dam in the background, pedrogão grande portugal

river zêzere old bridge bouçã dam background pedrogão grande portugal trees vegetation mountains clouds dam grande pedrogao trail viewpoint industry countryside village panorama bank scenic forest nature bouça sustainable electricity engineering energy hydroelectric vacation tranquil valley graça historic picturesque famous environment building vegetation hill old summer mountain destination outdoor tourism travel landmark architecture river zezere background bridge arch natural landscape europe portuguese