Llyn Cwm-y-ffynnon is a lake in

Snowdonia Snowdonia or Eryri (), is a mountainous region in northwestern Wales and a national park of in area. It was the first to be designated of the three national parks in Wales, in 1951. Name and extent It was a commonly held belief that the na ...

, below the summit of Moel Berfedd in Cwmffynnon. The lake's original name was Fynnon Mymbyr as outlined in

Llywelyn ap Iorwerth Llywelyn, Llewelyn or Llewellyn is a name of Welsh language origins. See Llywelyn (name) for the name's etymology, history and other details. As a surname Arts *Carmen Llywelyn, American actress and photographer * Chris Llewellyn (poet), American ...

's charter of 1198. As the name suggests, the lake nestles in a short valley, a cwm, high above the

Pen-y-Gwryd Pen-y-Gwryd is a pass at the head of Nantygwryd and Nant Cynnyd rivers close to the foot of Snowdon in Gwynedd, Wales. The area is located at the junction of the A4086 from Capel Curig to Llanberis and Caernarfon and the A498 from Beddgele ...

hotel. The lake is the source of the Nantygwryd (originally Y Mymbyr), river which in Welsh translates to

. Prior to 1198 the name Gwryd did not exist in the Mymbyr Valley or Dyffryn Mymbyr. This would suggest that the name "Gwryd" has appeared at a later date for whatever reason, for which there is limited data. The river which flows from here forms part of the county boundary between

Gwynedd Gwynedd (; ) is a Local government in Wales#Principal areas, county and preserved county (latter with differing boundaries; includes the Isle of Anglesey) in the North West Wales, north-west of Wales. It shares borders with Powys, Conwy County B ...

and

Conwy county borough Conwy County Borough ( cy, Bwrdeistref Sirol Conwy) is a county borough in Wales. It borders Gwynedd to the west and south, and Denbighshire to the east. Other settlements in the county borough include Abergele, Betws-y-Coed, Colwyn Bay, Con ...

External links

Llyn Cwm-y-ffynnon and the source of the Nantygwryd
{{authority control Beddgelert Llanberis Cwm-y-ffynnon Cwm-y-ffynnon Tourism in Gwynedd Tourism in Snowdonia