A mound is visible as cropmarks and earthworks on historical air photos and on lidar imagery. This feature is likely to be the partially levelled remains of a spoil heap associated with a late 18th century coal pit, of which there are several in this area. Many of these are depicted on a plan published by Tomlinson in 1915, but he records no pit in this particular field. However there is no trace of the pit he names as Fortuitous where he places it in the neighbouring field. Hence it is likely that these low remains are directly related to the Fortuitous pit.