Walling of former railway coal depot, Stockton and Darlington Railway

The former coal depot, built between 1824 and 1825 for the Stockton and Darlington Railway, is a railway-served structure that has been partly reconfigured in the late 19th century and altered after the railway line closed in the late 1970s.

The site is defined by an outer wall that marks the original extent of the coal depot, with the walls holding back higher ground outside the yard. Most of the wall is constructed from brick, while the southern wall is made of stone. Regular buttresses are believed to be the cut-back dividing walls that separated the individual bays for coal and lime drops. At the northern end of the yard, there is a complete dividing wall made of stone and brick, which retains large stone blocks that would have supported the timber way-beams for the railway track over the drops.