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Title
Many wind generators of electric power on hilly landscape #146740454
Description
Large propeller blades from many wind generators of electric power on hilly landscape, in cloudy day at Serra da Estrela. The highest mountain range in continental Portugal, with astonishing scenery europe vacation travel tourist charming bucolic countryside hilltop field escarpment ground rural valley rocky flinty weathered green tree woods forest grove clump ridge highlands equipment turbine environmental electricity industry windmill energy technology road way steep overcast rainy hillside