The valleys within the Neath Port Talbot County Borough in the Swansea Bay region form a remarkably beautiful and largely undiscovered part of South Wales. Where mighty industries once flourished, the scars of this industrial past are now vanished and nature has reclaimed the deep sided valleys and hills. Thick forests of coniferous trees and ancient oak and birch cover the hillsides, whilst the valleys are penetrated by fast flowing rivers and streams with countless waterfalls down the valley sides.