Turret 50A TW was discovered in 1934, located 507 yards (464 m) west of Milecastle 50TW. Sufficient trace of Turret 50A TW survived demolition to establish that the walls were 76 centimetres (30 in) wide, and the structure had approximate external dimensions of 20 feet (6.1 m) square.[2][5]
Location: 54.984258°N 2.622283°W (Ordnance Survey National Grid Coordinates: NY 6027 6569)>[5]