The bounds of this polygon fossilised the shapes of two mill dams built to store water for the operation of the former Wardsend Steel Works / Wadsley Forge site immediately to the south. The dams were filled in and built over in the mid twentieth century with much of this polygon occupied by the Armstrong Saw Works (demolished between 1983 OS 1:10000 and CR aerial photograph 1999.) Currently the site is largely cleared industrial land with mid twentieth century buildings on its fringes. Fragmentary legibility of the former dam site in the boundary of the present plots. For more information consult Crossley (1989, 8) HSY 1301, and SMR PRN 01683.