This is the site of the Park Pit. Like many coal-mining sites in this area it was owned and operated by the Delaval family. It was sunk from 1789 to 1790 and worked from 1790 to 1796. The first Ordnance Survey map-makers in the 1860s did not note the site as a coal shaft or bell pit - though they appear to have recognised it as a spoil heap. There was no wagonway built here to transport the coal.