Duddon Iron Furnace

Duddon Iron Furnace is a Grade II* listed iron furnace for charcoal smelting, built around 1737. The structure is made of stone rubble and has a square shape with extensions to the west that are built into the slope of the ground. It features deeply splayed furnace openings, with the eastern opening having iron lintels and the southern opening being round-arched. There is a smaller square structure on top that has a round-headed opening to the west, which is made with long thin voussoirs and includes a 20th-century inserted door, accessed by a 20th-century ramp. The rear extensions have half relieving arches and flat arched window openings, and a small wing to the south retains one gable. Footings of demolished structures are present to the south and east, along with a wheel pit to the north. This is the best surviving charcoal-fired furnace in the South Lakes district and is designated as a Scheduled Ancient Monument.