Coal Hole
(noun) The nick-name for the sunken road in Minffordd Yard, used for transhipment of coal and gravel by gravity from standard gauge wagons. The 'chutes are still used for deliveries by Lorry.
Similarly, the steep, curved access in and out is known as the "Coal Road".
Common Useage: "Go and get Hoppity Hopper from the Coal Hole"