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.
We started at Llanfihangel-y-pennant and followed the road/track north heading for Rhiw Gwredydd but turned off as we got close to the top. We went over Carnedd Lwyd to the summit of Tyrrau Mawr. We followed the fence line until we climned over the rocks and headed down to pick up the path. We then retraced our steps along the track.
