The ‘special features’ he mentions are a series of dramatic waterfalls that tumble through the steep-sided, tree-lined gorges of the Rivers Mellte, Hepste, Pyrddin and Nedd-Fechan and eventually, into the River Neath.
Aberdulais Waterfall in the Dulais Valley is the most accessible, thanks to the National Trust-run centre there that showcases both the site’s natural beauty and industrial heritage. A few miles up the Vale of Neath, the impressive 80ft-high waterfall at Melincwrt lies at the end of a short woodland path.
Head further north and you’ll discover ‘Waterfall Country’, a triangular area formed by the villages of Pontneddfechan, Ystradfellte and Hirwaun. Natural forces have combined here to create a highly concentrated area of waterfalls, gorges and caves.