Dol y Clochydd Blast Furnace dates from the late sixteenth century and it was excavated by course members from the Snowdonia National Park Study Centre during 1984 to 1985. The survey showed that the structure had been timber clad and may well have burnt out in the first decade of the seventeenth century.
Source: David Gwyn & Merfyn Williams (1996) `A Guide to the Industrial Archaeology of North West Wales?. Association for Industrial Archaeology.
