alcantara dam, on tagus river built in 1969, provence of caceres, spain

bridge waterway river landmark transport canal tourism reservoir water reflection town walkway arch architecture ruins alcántara cáceres spain march dam aka josé maría oriol alcantara buttress tagus built 1969 2024 provence caceres jose maria blue concrete countryside electric electricity energy environment europe extremadura generate gravity green hilly hydroelectric hydropower iberdrola landscape nature plant power regenerative rio spanish spill station stream supply tajo tejo wall