1. The group of features are located where the Gentleman's Walk, laid out by Thomas Johnes in 1795, crosses the Nant Bwlch-Gwallter on the return pathway to Hafod Mansion. The features include a line of boulders arranged on the western side of the waterfall, a slab bridge, the remains of a chain bridge and an arrangement of boulders into a viewing area called Mossy Seat.
Source: Cadw scheduling description of Sept 1998 F.Foster/RCAHMW 21.08.2007