Cwm Glas Bach is a collection of small crags offering some great single-pitch climbing. Though only a stone's throw from the road, the climbing here feels isolated and remote and is often deserted in favour of the bigger plums in the valley. If you want to get away from it all, but don't want to walk for an hour, then this is the place for you. The crags are spread across a broken hillside that can be hard to navigate on first acquaintance. However, taking the time to get lost and find yourself again is a delight in this area.