Scenic view of an ancient stone wall stretching across a rugged landscape under a clear blue sky at Sycamore Gap, Northumberland, England, United Kingdom, Europe

hadrian's wall sycamore gap northumberland england ancient roman structure wall landscape scenic view sky clouds grass rocks path history travel destination tourism heritage archaeology landmark monument outdoor nature wilderness countryside green blue horizon ruins stone roman empire british history hiking walking north united kingdom historic site national trust history buff explorer adventure outdoors travel inspiration holiday vacation getaway relax