Former Navigation Colliery South Winding Engine House

The Former Navigation Colliery South Winding Engine House is a tall, single-storey rectangular structure that is small in plan. It is built of high-quality red and yellow engineering brick, with the yellow brick slightly projecting and arranged in a stepped pattern at the quoins, pilasters, plinth, and cornice, creating a grid effect. The roof is made of Welsh slate and features a long gabled ridge ventilator. The building measures five bays long and three bays wide. The side elevation has long, narrow, round-arched multipane metal-framed windows, each with a narrow keystone and sill. The gable end includes a large round-arched central doorway, flanked by similar windows that are now blocked, a small segmental-arched opening above, and a roundel in the gable.