Former Navigation Colliery Heapstead and Main Revetment Wall

The Former Navigation Colliery Heapstead and Main Revetment Wall is a substantial wall made of rubble sandstone, maintaining a consistent height across the main terrace and gradually sloping down to the lower ground level on the right. This section is faced with brick and serves as a track that connects the road level to the main terrace. On the eastern sides of the wall, two Winding Engine Houses are constructed directly onto it. The wall features numerous iron fixings and putlog holes, which were used to support gantries and screens in the past. There is a large semi-circular brick archway located in the center right, which is now blocked; this archway once led to the northern shaft and provided access for coal wagons. Additionally, a Fan Drift enters the Heapstead on the left, leading to the southern shaft. A chimney rises from the center rear of the structure.