Llynnau'r Cwn is really three pools, not one lake, and it pays to know which is which before you start walking the bank. The top pool is peaty, dark, and presumed fishless — nobody bothers with it, and neither should you. The lower two are a different matter, holding wild brown trout to around a pound and a half and fishing considerably better for the fact that most visitors never get past the first pool to find out. Worth the extra fifteen minutes to reach the water that actually holds fish, and worth remembering which pool is which on the way back.
- Lake
- Ordovician volcanics
