Hafna Lead Mine - Gwydyr Forest

Hafna Mine has the most extensive and best-preserved remains of any of the mines on the Gwydyr estate and it was once one of the most important lead mining areas in the United Kingdom. The remains include a stepped smelting mill, incline, smelting house and round plan chimney on the western side of Bwlch yr Haearn. The mill dates from 1889-1905, it has a French design and has used water, steam and electricity. The mine is known to have last worked in 1919. The remains have now been conserved.