Grassed over spoil heaps associated with Worsbrough Park/Barrow Colliery. They are first mapping in this polygon in 1965. Previously this was the site of the Worsbrough Dale Powder Mill which produced gunpowder. This is shown on first edition (1855) maps and probably developed alongside the mines. The mill is disused by 1931. This land may have been part of the Worsbrough town field in the medieval period. Land adjacent to the polygon was enclosed in long strips but this area was subject to piecemeal enclosure. There is no legibility of previous landscapes beneath the spoil heaps.