Former Llanbradach Colliery upper revetment wall

A long and tall revetment oriented N-S and continuing from the engineering shop to beyond the fan house. The wall is constructed of snecked, rock-faced sandstone with an irregular top and most of its coping missing. Facing the former yard is a segmental headed doorway at high level with steps leading up to the engine hall. To its L is an opening in the top of the wall defining the position of the winding cables from the engine hall to the shaft. Opposite the engineering shops is a round-headed opening to a vaulted chamber. A similar vaulted chamber, reached through a narrower segmental-headed doorway, is opposite the fan house. Girders link the wall to the fan house and to the engineering shops, while brackets project at high level from the wall in several places.