Scenic view of an ancient stone wall stretching across a grassy landscape under a blue sky with wispy clouds at Sycamore Gap, Northumberland, England, United Kingdom, Europe

hadrian's wall sycamore gap northumberland england united kingdom roman wall stone ancient history landscape scenic view green grass sky blue clouds wispy unesco travel tourism destination outdoor nature exploration adventure hiking walking trail path history buff roman ruins archeological site historical site ruins roman empire roman britain british history northern england england travel england tourism uk travel uk tourism european travel european tourism