Milefortlet 22

Milefortlet 22 (Brownrigg) was a Milefortlet of the Roman Cumbrian Coast defences. These milefortlets and intervening stone watchtowers extended from the western end of Hadrian's Wall, along the Cumbrian coast and were linked by a wooden palisade. They were contemporary with defensive structures on Hadrian's Wall. There is little to see on the ground, but Milefortlet 22 has been located and excavated.

• http://en.wikipedia.org/wiki/Milefortlet 22