Corsiog is the smallest, shallowest thing in the Cambrian AA book, and it fishes like it — a modest pool of peat-stained water tucked in below Conglog that colours quickly in wind and clears just as fast. Don't come expecting size; come expecting the particular pleasure of fishing water nobody else bothers with. The wild brown trout here are small and willing rather than selective, which suits a short evening session when you've already walked further than planned to reach the bigger neighbours. Treat it as a bonus stop on a longer day in this corner of the uplands, not a destination in its own right.
- Lake
- Ordovician volcanics
