Nanstallon in 1965 by Aileen Fox and Professor W. L. D. 'Bill' Ravenhill. Until recently (2007) it was the second Roman fort in Cornwall but following a geophysical survey another Roman fort has been found away near Restormel Castle. Constructed c. AD 55–60, Nanstallon fort is situated in mid Cornwall near the Fowey-Camel trade and communication route. Nanstallon was probably a forward operating base and was strategically well-placed for a Roman presence to be felt. However, the Roman Legion at Exeter was withdrawn c. AD 75 and with no Roman town west of Isca Dumnoniorum Cornwall settled down to four centuries
England–Wales border Insular Celtic languages, and were regarded as Britons. The clear geographical divide between the mountainous western areas of southern Britain and the generally lower-lying areas to the east was reflected in the pattern of Roman occupation. The main Roman military bases for the control of what became Wales were beyond the mountains, at "Deva" (Chester), "Viroconium" (Wroxeter, near Shrewsbury), and "Isca Augusta" (Caerleon, near Newport), all located close to the later national border. When the Roman garrison left around 410, the various parts of Britain were left to govern and defend themselves. The western area, later Wales, had become largely