hadrians wall in northumberland national park, northern england, great britain

ancient archaeological archaeology architecture attraction border borders britain britannia britannicus british britons building cliffs clouds countryside empire england europe evening excavation footpath fortification foundations frontiers garrison grass grassy great hadrian hadriani hadrians heritage hike hiking hills hilly history isles kingdom lake landscape light limes low masonry mile national nature northern northumberland open park path pennines picts point post remains rocky roman rome scotland site steep strategically structure sun sunshine tourist trail travel uk unesco united vallum wall west western world