Cadair Idris or Cader Idris is a mountain in the Meirionnydd area of Gwynedd, Wales. It 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, is composed largely of Ordovician igneous rocks, with classic glacial erosion features such as cwms, moraines, striated rocks, and roches moutonnées.
Llyn Cau with the summit of the mountain to the right
The northern side of Cadair Idris viewed from Garth Gell (Bontddu)
Looking north from Llwybr Pilin Pwn
A roche moutonnée near Llyn Cau. The direction of the glacial movement was from left to right.
Snowdonia, or Eryri, is a mountainous region and national park in North Wales. It contains all 15 mountains in Wales over 3000 feet high, including the country's highest, Snowdon, which is 1,085 metres (3,560 ft) tall. These peaks are all part of the Snowdon, Glyderau, and Carneddau ranges in the north of the region. The shorter Moelwynion and Moel Hebog ranges lie immediately to the south.
View of Llyn Cwellyn from the Snowdon Ranger path
Slate quarry with Mynydd Mawr in background
Panorama of some of the Snowdon Massif including Snowdon (centre right) taken from Mynydd Mawr. The Glyderau are visible in the distance.
Sunrise over Snowdonia