among green mountains the river in the background

reservoir coast sea lake bay mountain fjord cliff terrain shore vacation cape river water landscape cove santa-luzia-dam dam unhais-river zêzere-river pampilhosa-da-serra hydroelectric-power-plant electricity hydroelectric boulders mountain nature landscape river sky green tree perspective lake summer forest mount valley panorama rock europe tourism dark navigate water portugal blue casal-da-lapa rural countryside travel mountains altitude natural scenic plants trees energy renewable turbines