Llyn Idwal into Llyn Idwal from around Cwm Idwal. One small river flows out and joins the Afon Ogwen river at Pont Pen-y-Benglog near Ogwen Cottage, immediately above the Rhaeadr Ogwen waterfall. The lake is easily accessible on foot via a 900-metre long stone-paved path from Ogwen Cottage on the main A5 road. Another path encircles the lake. Two paths lead from opposite sides of the lake to the top of the ridge close to the Twll Du (Devil's Kitchen), but these paths become rather steep in places. They lead to Glyder Fach and Glyder Fawr. There is a small pebble beach
Idwal Iwrch Idwal Iwrch Idwal Iwrch (), or Idwal ap Cadwaladr (), is a figure in the genealogies of the kings of Gwynedd. He was the son of King Cadwaladr ap Cadwallon (reigned c. 655 – 682) and the father of King Rhodri Molwynog (died 754). The records of this era are scanty, and Idwal's name appears only in the pedigrees of later kings and in a prophecy found in two 14th-century Welsh manuscripts, which says that he will succeed his father Cadwaladr as king. The only mention of Idwal Iwrch in the historical record is the appearance of his name in