Pottery and other evidence suggesting the presence of an ironworks have been found at the undisclosed location near St Austell, Cornwall.
Experts say the discovery challenges the belief that Romans did not settle in the county and stopped in neighbouring Devon.
The site had previously been regarded as an Iron Age settlement but the recent discovery of pottery and glass was found to be of Roman origin.
John Smith, from Cornwall Historic Environment Service, said: ”This is a major discovery, no question about it.
”For Roman Britain it’s an important and quite crucial discovery because it tells us a lot about Roman occupation in Britain that was hitherto completely unexpected.
”In finding the pottery and glass, it’s saying the occupation goes to about 250AD, which turns the whole thing on its head.”
Archaeological Jonathan Clemes discovered various artefacts by studying the earth after it had been ploughed.
He said: ”You’ve got to know your pottery. If you come across a bit of pottery and you know what it is, it can tell you a great deal about the activity that went on in that area.”
Following the discovery of the artefacts a geophysical survey uncovered a fort and a marching camp.
Prior to the discovery it was believed that Roman forts had only been positioned close to the Devon border before the Roman’s left the region for south Wales.
It will now be considered whether to excavate the area or to leave it for a future excavation when techniques have advanced.
The map shows the ‘current view’ of Roman settlement (generally) in Britain; if the St Austell thing proves true, perhaps there will be more evidence further west as well …
On the heels of last week’s announcement of the opening of a major Roman site to the public, the Sofia News Agency tells us that archaeologists are on the trail (they hope) of Constantine’s palace there too:
A large ancient building located under the St. Nedelya Cathedral in downtown Sofia might turn out to be a palace of Roman Emperor Constantine the Great, according to Bulgarian archaeologists.
The building might also turn out to be the ancient thermae, or public baths of the ancient Roman city of Serdica, today’s Sofia, according to architect Konstantin Peev, head of the EKSA company, which is helping the Sofia Municipality with the excavation and restoration of the archaeological heritage of the Bulgarian capital.
The excavations at the Sofia Largo and the so called Metro Station 2-8 next to the Tzum retail store were made necessary by the construction of the second line of the Sofia Metro.
According to Peev, the bouleuterion of the city of Serdica was located under the northwestern corner of today’s building of the Sheraton Sofia Hotel Balkan. The bouleuterion was a small amphitheater-like building which housed the council of the citizens in the Antiquity period. The Serdica bouleuterion had a diameter of about 20 meters.
Peev also said that the archeaological excavations in the spring of 2010 have so far revealed a number of Roman insula, i.e. homes closed off among four streets.
He pointed out that the archaeologists have revealed the main streets of the Roman city of Serdica – the main street, decumanus maximus, connecting the Eastern and Western Gates, was wide about 7-8 meters and paved with huge pave stones. The cardo, the secondary street, went in the north-south direction.
Architect Peev stated that the municipality and the Culture Ministry were currently considering various options for conserving and displaying the archeaological heritage of Sofia.