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🛡️ Frontiers of the Roman Empire

Archaeology - Ancient Rome United Kingdom Europe

🛡️ Frontiers of the Roman Empire
Swarthy Hill milefortlet 21, Cumbrian coast


🕐 3 min read · Updated 2 Apr 2026 at 10:16

UNESCOUNESCO World Heritage Site

📋 Fast Facts
  • Milefortlet on the Cumbrian coast, part of the western extension of Hadrian's Wall frontier system
  • Located 80 metres south of the Saltpans, on a modest rise overlooking the Solway Firth
  • One of a chain of fortified posts spaced approximately one Roman mile apart along the shoreline
  • Survives today as earthwork traces; garrison housed a small detachment of auxiliary soldiers

Swarthy Hill milefortlet 21 occupies a strategic position on the Cumbrian coast in northern England, standing on a ...

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