Maryport, GB
Milefortlet 23 (Sea Brows) 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 nothing to see on the ground, but Milefortlet 23 has been located and surveyed.
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