Glyncorrwg Railway descends into Cwm Gwenffrwd through a rocky cutting approximately 90m long, up to 7.0m deep and 3.8m wide. Below is an embankment 5.8m wide and remains of underbridge abutments, spanning 2.5m and approximately 2.3m high; the bridge probably consisted of timber or iron beams. South of the bridge, the incline is supported on the NE side by a substantial stone retaining wall and buttresses, now tumbled but still standing up to 5.0m high. The incline descends further into dense forestry plantation (not visited).
Site visited B.A.Malaws, 20 February 1992.
(Source: taken from site notes of B A Malaws)

Associated with:
Winding House (Nprn309297).
Part of:
Glyncorrwg Railway (Nprn34840).

Note: Glyncorrwg Mineral Railway synonymous with 'Parsons' Folly'.