Bevisbury would be difficult to find, so indistinct are the remains, were it not for the T-junction with Hungerford Lane almost in the centre of the remains of the fort. It's rather more than just crop marks, but if you didn't know it was there it would be difficult to spot.
Best views of the remaining embankment and ditch are to the west of the T-junction.
I would rate it Condition: 2, Ambience: 1 and Access: 5 as you can unfortunately drive right into the middle of it!
Something is not right. This message is just to keep things from messing up down the road