The Afon Teifi — or River Teifi — is one of Wales' most celebrated and storied fishing rivers, stretching approximately 75 miles from its headwaters high in the Cambrian Mountains and Teifi Pools near Tregaron, all the way to its estuary at Gwbert on Cardigan Bay. The longest river to both begin and end entirely within Wales, the Teifi winds through a landscape of lush meadows, rolling hills, shallow riffles, dramatic waterfalls, and dark rocky gorges before reaching the sea. It is a medium-sized mesotrophic river system of exceptional conservation value, designated as both a Site of Special Scientific Interest (SSSI) and a Special Area of Conservation (SAC), managed by Natural Resources Wales. The river's semi-natural channel, largely free from artificial barriers and poor water quality, supports a remarkably diverse and healthy aquatic ecosystem, making it one of the finest game fishing rivers in the United Kingdom.