Erratic enclosure to the east of the polygon where the Post-Medieval coal pits are clustered on 1851 OS map. Possible 'squatter' enclosure by miners. Farm name 'Riddlepit' indicates former industrial activity (Addy 1969). Boundaries now approaching dereliction. There are no physical remains of the bell pits so legibility of the extractive landscape is invisible. The origin of the former moorland landscape is uncertain though this area is likely to be moorland by the Roman period (see Bevan 2003 for discussion of environmental evidence in region).