Milefortlet 4 (Herd Hill) 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 4 has been located by archaeologists.

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1.3 km

Milefortlet 3

Milefortlet 3 (Pasture House) 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 3 has been located on aerial photographs.
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1.5 km

Milefortlet 5

Milefortlet 5 (Cardurnock) 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. The remains of Milefortlet 5 was excavated in 1943-4 prior to its destruction in 1944.
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1.8 km

Anthorn Radio Station

Anthorn Radio Station is a naval and government radio transmitting station located near Anthorn, Cumbria, England, overlooking the Solway Firth, and is operated by Babcock International (with whom former operators VT Communications are now merged). It has three transmitters: one VLF, one LF, and an eLoran transmitter. It is on the site of the World War II military airfield which was operated by the Fleet Air Arm as HMS Nuthatch.
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1.8 km

Cardurnock

Cardurnock is a small settlement in Cumbria, England. It is by the coast, 20 kilometres (12 mi) west of Carlisle. The western extension of the Hadrian's Wall frontier defences once passed through the Cardurnock peninsula, though not the Wall itself. The sites of two small Roman fortlets, Milefortlet 4 and Milefortlet 5, have been located to the north and south of Cardurnock. It is adjacent to the Anthorn Radio Station.