At the junction, the road to the north led directly form the main gate of the castle. The market place was positioned immediately across a moat and a pomœrium, outside the gate but those are no longer visible from the road. However, our road continues not straight ahead but on a 45° angle toward the south. This bend arose because it passed around the perimeter of the pomœrium until it met the road leading eastwards from the gate. As the A151 reaches this, it turns back through 45° and continues eastwards along that approach road, across the line of the Roman version of the A15, King Street and past the Abbey Lawn. This is now a picturesque cricket ground, but was an 18th-century sheep lawn.(24) Soon, the road leaves the 12th century, Norman road, heading towards the pre-Norman town. On arrival, it turns eastwards again, at the same time as crossing the now-buried course of the Car Dyke and onto the fen-edge gravel. This is material which drifted down the slope which we have followed, while it was under the water of the Devensian periglacial lake.