Area quarried away.

The workings along the Red Vein, stretching from Allt Eisteddfod to Maesyfynnon Shaft, include shafts and spoil mounds located at SJ 2579 5226, SJ 2585 5225, SJ 2590 5217, and SJ 2596 5207, crossing fields of pasture. The Maesyfynnon Shaft is still visible on the property of Maesyfynnon Cottage, located to the north of Aber Sychnant. In addition, several disused shafts remain on the northern bank of Aber Sychnant to the east of Maesyfynnon.

The Main Vein and the Red Vein are located within Carboniferous Limestone. The workings along the Red Vein can be traced heading south-eastwards from Allt Eisteddfod towards the Maesyfynnon Shaft at SJ 2599 5200. The Maesyfynnon Shaft, which was sunk to a depth of 300 feet, remains on the property of Maesyfynnon Cottage to the north of Aber Sychnant. Disused shafts are also found to the east of Maesyfynnon, including one known as Morgan’s.

The sett was serviced by the 1850s mineral railway. The Maesyfynnon Shaft and its Engine House, dating from 1783, were likely powered by a 50“ engine, probably manufactured by John Wilkinson at his Bersham Ironworks. The engine was likely of the Bolton and Watt type.