What is "verterae"

Verterae was a Roman fort in the modern-day village of Brough, Cumbria, England. Occupied between the 1st and 5th centuries AD, is protected a key Roman road in the north of England. In the 11th century, Brough Castle was built on part of the site by the Normans. Archaeologists explored the remains during the 20th century, and it is now protected under UK law.