aqueduct along the cc-142 to pantano de valdesalor, spain

advantage ancient aqueduct arch arches architectural architecture bow bows brick bricks bridge building carry cc142 civil construct constructed construction continuous distance distribution drainage engineering europe european extremadura flow gravity historic historical history iberian indoor lake landmark long medieval old outdoor outdoors outside pantano peninsula plumbing provide road running sewer source spain span spanish spanning stability stone system transport tree trees valdesalor water watercourse waterway