If your very lucky, you can sometimes find a parking place, just near Pont Y Gromlech, which is the final carpark in the llanberis Pass, before you make the climb up towards Pen Y Pass.
Cross that small bridge next to the river, at Blaen Y Nant, and if you look carefully, there's a clear well trodden path that winds itself along the lower slopes of Cwm Glas, used by walkers usually attempting the Parsons Nose route on llechog.
Many years ago, whilst parked in the large car park just outside Nant Peris, i would look up towards the North Ridge of Crib Goch looking ever so menacing above Cwm Glas, and thought, there's no way i would ever contemplate venturing inside there.
Its looks ever so challenging ground, and even parked below in the llanberis Pass, it still looks the preserve of rock climbers or those types that love hard rock scrambles.
Well ive now traversed Cwm Glas over six times, and its a magical place, looking up at the walkers crossing Crib Goch's ridge, high above you, that's a real thrill.
I hate heights, and a Grade 1 scramble is not my cuppa, but ive used the Bwlch Goch route up to Snowdon, on two occasions, as it misses out the main challenge of Crib Goch, but still provides the fairly easy scrambling towards Carnedd Ugain.
There's nothing challenging about the route, and its an area of Snowdonia that few walkers get to see, simply because the route into Cwm Glas looks intimidating, when there's nothing challenging about it at all.