The Glyderau present a much more rocky appearance than the smooth rounded humps of the Carneddau just to the north. The ridge between the summits of Glyder Fawr and Glyder Fach is covered with coarse grasses and heathers and strewn with boulders and slabs of rocks. The ascent to the summit of Tryfan requires scrambling rather than just walking. Tryfan, Glyder Fach and the cliffs around Cwm Idwal offer rock climbing with routes ranging from those suitable for beginners to those requiring great technical expertise. The mountains can be approached from Llyn Ogwen to the north, where there is a car park, or from Nant Peris in the Llanberis Pass where there is a park and ride service. Buses run hourly from Bangor to Llanberis and there is a less frequent service from Bethesda to Llyn Ogwen.