Grimethorpe Colliery sunk its first shaft in 1894 (Hill 2001, 157-162). By 1907 maps the colliery had reached this extent. The mine was served by major railway sidings. Ancillary works included a brick works, sewage works and later a power station. The colliery closed in 1992 but the site is still partially active as an opencast mining operation. New roads are being built through this area indicating reclamation of the land is in process. 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 landscape.