Looking across Afon Caseg towards Cwm Caseg - geograph

Cwm Caseg is a broad glacial valley in

Snowdonia Snowdonia, or Eryri (), is a mountainous region and National parks of the United Kingdom, national park in North Wales. It contains all 15 mountains in Wales Welsh 3000s, over 3000 feet high, including the country's highest, Snowdon (), which i ...

leading west from the

Carneddau The (lit. 'the cairns'; is a Welsh language, Welsh plural form, and is sometimes anglicised to ''Carnedds'') are a group of mountains in Snowdonia, Wales. They include the largest contiguous areas of high ground (over or high) in England and W ...

towards Bethesda. It is bordered by

Carnedd Llewelyn Carnedd Llewelyn, also spelled Carnedd Llywelyn, is a mountain massif in the Carneddau range in Snowdonia, north-west Wales. It is the highest point of the Carneddau at and the second-highest peak by relative height in Wales, ...

to the southeast, Yr Elen to the west, and

Foel Grach Foel Grach is a mountain in the Carneddau range. It is the eighth-highest summit in Snowdonia as well as Wales, and is included in the Welsh 3000s. It is located on a broad ridge extending northwards from Carnedd Llewelyn to Carnedd Gwenllia ...

to the northeast. It contains a small lake, Ffynnon Caseg.Pearce, Horace.
In the Tracks of Old Welsh Glaciers
'. The Dublin University Magazine, Volume 84, 1874

References

Bethesda, Gwynedd Llanllechid Valleys of Gwynedd Valleys of Snowdonia {{Wales-stub