hadrians wall in northumberland national park at housesteads roman camp, northern england, britain

ancient archaeological archaeology architecture attraction between border borders britain britannia britannicus british britons building camp castle clouds empire england europe excavation fort fortification fortlets foundations frontiers garrison grass grassy great hadrian hadriani hadrians hadrian's heritage hiking hills history housesteads isles kingdom landscape limes low masonry mile national nature northern northumberland park path pennines picts remains roman rome scotland site steep strategically structure tourist trail travel uk unesco united vallum vercovicium wall west western world