The Black Lake — fifty-eight metres deep in a brooding glacial cwm beneath Garnedd Uchaf and Foel Grach, 580 metres above sea level. Thirteen hectares of cold, dark water holding wild brown trout and a tiny Arctic char population. Very lightly fished — two and three-quarter miles' walk in keeps it that way. Bank only, two-fish limit. The kind of place where you stop and notice you're being watched by a buzzard.
- Lake
- Ordovician volcanics

