History of Workington established on the north bank of the mouth of the River Derwent, near present-day Siddick Pond and Northside. Another fort or watchtower would have been on How Michael to the south side of the river, near present-day Chapel Bank. In 122, the Romans begin building Hadrian's Wall from Bowness on the Solway Firth to Wallsend on the North Sea. The discovery of a Roman fort around the parish church in Moresby to the south, and fortifications to the north at Risehow (Flimby), Maryport and Crosscannonby support the argument that the coastal wall extended down the whole Solway coast and formed
Hadrian Arrian kept Hadrian well-informed on matters related to the Black Sea and the Caucasus. Between 131 and 132 he sent Hadrian a lengthy letter ("Periplus of the Euxine") on a maritime trip around the Black Sea, intended to offer relevant information in case a Roman intervention was needed. Hadrian also developed permanent fortifications and military posts along the empire's borders ("limites", sl. "limes") to support his policy of stability, peace and preparedness. This helped keep the military usefully occupied in times of peace; his Wall across Britania was built by ordinary troops. A series of mostly wooden fortifications, forts, outposts