Roman bridge along Antonino's Via Nova the esteemed Navea Bridge, aerial overview

roman bridge antoninos via nova esteemed navea aerial overview san xoan de rio navea bridge mino sil valley middle ages ourense galicia spain antonino via nova antonine itinerary geira roman road leafless barren scraggly bracara augusta asturica augusta roman mile astorga braga establish vespasian titus commercial purpose julius milestones mansio post station lodging route conserve historical old brick stone architecture space for text copy space no people