Gully Route
The great wedge-shaped slab of Tryfan Bach (or Little Tryfan as it's also known) sits a few minutes walk from the main road through the Ogwen Valley. Due to its location and easy angle it's a popular crag for beginners, but it also makes a good prelude to a scramble on the East Face of Tryfan.
For those confident with ropes and climbing situations there is a grade 3 route towards the left edge of the crag. An easier option exists much further right however in the form of a deep gully/groove. This gully bends slightly left at half-height but is very easy to identify. Scramble up the gully with relative ease until you reach the place where it bends slightly left. Here there is a sort of overhanging chockstone.
At first a route up cracks to the right looks enticing, perhaps followed by a step left to overcome the chockstone, but ignore this. Instead overcome the chockstone direct. This is a little awkward (crux) but proves acceptable. Above this a few more steps lead you upwards, with the downward sweep of slab close on your left. You soon reach the top of the crag.
Here follow it right with another little step or two. You can then head down grassy slopes on the right to gain the path heading to Cwm Tryfan and Tryfan East Face. If you ignore the slopes down, then the actual summit of the crag can be gained, but only by some difficult grade 3 scrambling (ropes advised).