Spoil heaps and extractive landscapes surrounding Grimethorpe and Ferry Moor Collieries. The collieries expanded to this size by the 1960s. Grimethorpe was closed in 1992 (Hill 2001, 161) but much of this area has since been used for opencast reclamation of the spoil heaps. This was likely to have been part of the expansion of Brierley deer park that occurred in the late 16th century (Harrison & Watson 2006 [accessed 15/11/07]). The park is marked on 1610 maps but not on Jefferys 1775 map. The fields shown on historic maps are fairly regular, however, this area is likely to have been assarted from woodland. There is no legibility of the former enclosed landscape.