Barristers Plain Cross-Ridge Dyke runs southwest to northeast, almost in a straight line for . It runs across the narrowest area of a ridge between Grindle Hill and Round Hill. The remains of the dyke is now covered in heather, and is approximately wide, and is high. On its western side it is fronted by a wide ditch. At both ends of the Cross Ridge Dyke, it fades into the steep hillside. A gap in the dyke, from the south-east end, is thought to make room for a trackway along the ridge. Its purpose was to cut off Grindle Hill from the main plateau, and to create a barrier for access from the west.