The name Furnace was quite appropriate on the day I visited: it was a very warm sunny evening and a few miles away to the north east one of Ireland's biggest forest fires for decades was raging and the clouds of smoke from it could be seen clearly from Furnace. The island is apparently named Furnace, as there was once a furnace on it used for the manufacture of iron.
Furnace from Lettermullen at low tide
Middle of the island
Looking north near the end of the public road
Typical Furnace Landscape
Houses on Furnace
Newly built house