ruins of roman castellum vercovicium, housesteads roman fort on hadrian`s wall, northumberland national park, northern england

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