The area to the south of Ailsworth and Castor villages is known as Normangate Field. It was the site of extensive Roman pottery and metal working workshops. The Roman road of Ermine Street runs through the area. It can be seen today as a massive bank of earth concealed underneath several hundred years of repeated road surfacing. The potteries here gave their name to the distinctive Roman pottery known at Castor Ware. Interpretation from 2018 has revealed that the Normangate Fields contained a complex and thriving community. The location of the fields put the pottery and metal workers in an excellent position. They were near the Praetorium, Durobrivae and Rive Nene for water-based transport. Also, not only were they straddling Ermine Street, but King Street too. It is possible that King Street was once much more important than Ermine Street based on the location of the workers.