Turret 50B (Appletree) (grid reference NY59736573) was also excavated in 1911.[5] There are no surface remains visible, but a distinct rise in the south wall of the road marks the point in which it is carried over the south wall of the turret.[5] It replaced the earlier turf wall turret (50B TW; grid reference NY597655) which was dismantled when the stone wall was built.[6]