Cadair Idris or Cader Idris is a mountain in Gwynedd, Wales, which lies at the southern end of the Snowdonia National Park near the town of Dolgellau. The peak, which is one of the most popular in Wales for walkers and hikers,[1] is composed largely of Ordovician igneous rocks, with classic glacial erosion features such as cwms, moraines, striated rocks, and roches moutonnées.
Started at Cadair Gates with 10 OB Students, went up Stone chutes with them to Cyfrwys and then the Cadair itself. Then down Foxes and camped at Llyn Y Gadiar. Next day walked down to the Pony path and down to Morfa Mawddach and caught the train back to centre. 
