Hadrian's wall; milecastles 43, 44, 45 and 46; turrets 42B, 43A, 43B, 44A, 44B, 45A and 45B. AD 122, reconstructed AD 205. Rubble core with dressed stone faces. Course of wall runs west from Cawfields (NY 712665) to Holmhead (NY 659660).