Spoil heap associated with Woolley Colliery which was operating between 1854 and 1987 (Gill 2007b). The colliery was built at this position to take advantage of the newly built Barnsley branch railway line (opened in 1850) (Goodchild 2001, 88). The heap expanded to cover this area by 1938 mapping. Previously this area was characterised by irregular fields. There is no legibility of this earlier landscape as the mine has overwritten the landscape.