Land that was part of the open fields around Barnsley in the medieval period. Swinhill field was mentioned as an area of surviving open field in 1649 (Elliot 2002, 37) but this may refer to the land south west of this polygon that was enclosed as part of the 1779 parliamentary award (date from English 1985). This land was marked as irregular enclosure on the 1777 award map. Now a modern sports centre and playing fields built on land that has been recreation ground since 1893 mapping. There is fragmentary legibility of the former enclosure pattern in the layout of the sports grounds.