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.
Very tired from previous day. Snowline around 400m. Reached the summit in great conditions from there I could see bad weather hitting the mountains to the north. Decided to immediately descent. Weather very quickly deteriorated, visibility down to 10m with winds nearing 60mph!Walked purely on a bearing goggles were a must.Descent was very difficult until I reached Llyn Cau which was more sheltered.
