Turret 57A (Beck) (grid reference NY50456333) is situated about 180 metres southwest of Dodgson's Beck.[2] It was excavated in 1933.[4] The excavations confirmed that it was a Turf Wall turret, and it measured 6.1 by 6.9 metres.[4] Much pottery was found including Samian ware.[4] The site of Turret 57A is visible only as a slight swelling in the ground.[2]