This part of the Templeborough steelworks complex is first depicted in 1934. It contains the spoil heap and slag reduction works. Aerial photos show the site is still in operation. Prior to the siting of the slag heap, the area was agricultural. The irregularly shaped fields indicate piecemeal enclosure. Excavations in 1947 revealed evidence for a civilian settlement or vicus associated with the adjacent Roman fort. Finds included pottery and metal working residues. Legibility of the former landscape is invisible.