tagus river valley, view downstream from alcantara dam, toward ancient roman alcantara bridge, caceres province, spain

river valley jungle vegetation forest tree mountain terrain hill reservoir plateau wilderness landscape cliff stream waterway tagus view downstream alcantara dam ancient roman bridge spanning caceres province spain march 2024 alcantara alcántara architecture blue bridge buttress caceres clean energy concrete countryside cáceres dam electric electricity environment europe extremadura famous generate gravity green hilly historic hydroelectric hydropower iberdrola josé landmark landscape nature oriol plant power regenerative reservoir rio river roman spain spanish spill station stream supply tagus tajo tejo wall water