barragem do alto rabagao, a lake in north portugal

alto artificial barrage barragem barroso blue cloud clouds cloudy coastline dam edge electricity energy europe european extensive generate generating glisten glistening grass green highlands hill hills hydroelectric impressive lake landscape mill mills mount mountain mountainous mountains mounts natural nature outdoor outdoors outside panorama pass passage pisoes portugal portuguese power rabagao reservoir road shine shining sky smooth storage summer summertime sunny surface tops tourism touristic travel view water windmill windmills