Semi regular enclosures on an area which was previously characterised by small irregular assarts. The change is probably due to a period of opencast coal mining which was prevalent in this area after 1942 (when the Directorate of Opencast Mining was created (Gray 1976, 41)). There is still fragmentary legibility of the assarts as some sinuous boundaries remain. Aspects of the tanning industry, which was important in this area (Elliott 2004, 87), are indicated within this polygon. There was a tanyard at Dean Hill farm and a bark mill in the area.