Hadrian's Wall and Cawfields milecastle, Haltwhistle, Northumberland
A view looking eastwards along Hadrian's Wall as it runs over the Crags. An opening giving controllable access through Hadrian's Wall was built every mile along the structure (known as a milecastle). Cawfields milecastle (number 42) can be seen here on the hill. This site is now in the care of English Heritage (2010).