The Glyderau (a Welsh plural form, also known in English as the Glyders) are a mountain group in Snowdonia, North Wales. The name derives from the highest peaks in the range, Glyder Fawr and Glyder Fach. According to Sir Ifor Williams, the word "Glyder" derives from the Welsh word "Cludair", meaning a heap of stones.
St Ogwen Valley Car park and walk to Idwal Slabs and ascend the North-West Face scramble (Grade II) & then head to Cneifion Arête scramble (Grade III). Head along Gribin Ridge to summit of Glyder Fawr (999m). Return Via Seniors Ridge scramble (Grade I)
