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. 663602 and head up the north face of Tryfan and carried out some rope work as an interest period. Then at summit of Tryfan (915) waited for the other group and moved down together to south col and down to Cwm Tryfan and back to start point.
