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
Rhodri ab Idwal Foel Rhodri ab Idwal Foel Rhodri ab Idwal (died ) was a 10th-century prince of Gwynedd from the royal dynasty of Aberffraw. He was one of six children of King Idwal the Bald of Gwynedd, who was killed along with his brother Elissed during an English invasion , after which the kingdom initially passed to King Hywel the Good of Deheubarth rather than any of Idwal's heirs. At the death of Hywel, Idwal's sons rebelled against the new king Owain and his brothers. Rhodri's murder was recorded in the undated "Annals of Wales"; Phillimore's reconstruction would place the entry in AD