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
Snowdonia Society cultural heritage. The Society also organises a programme of walks and talks, publishes a bi-annual magazine, and offers training in conservation and flora and fauna ID. Membership is open to all with an interest in Snowdonia and can be obtained via the Society's website, or by contacting their office at Brynrefail, Gwynedd . The Snowdonia Society owns Tŷ Hyll (), which is located on the A5 between Betws-y-coed and Capel Curig. This house is reputed to be a "tŷ unnos", i.e. it was built overnight in order to establish legal ownership. Tŷ Hyll and its gardens and woodland are open