Trisha Shetty

Craig y Llyn

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Listing  Marilyn, council top
OS grid  SN906031
Elevation  600 m
Pronunciation  Welsh: [ˈkɾaiɡəɬɪn]
Topo map  OS Landranger 170
Prominence  392 m
Craig y Llyn httpsuploadwikimediaorgwikipediacommonsthu
Translation  cliff of the lake (Welsh)
Similar  Chwarel y Fan, Fan Brycheiniog, Betsom's Hill, Cheeks Hill, Moel Sych

Craig y Llyn is a mountain situated in Rhigos on the west side of the upper Cynon Valley and north of the Rhondda Valleys in South Wales; it is the highest point in the traditional county of Glamorgan. It has been designated as a Site of Special Scientific Interest and is named from the cliffs of its steep northern escarpment which overlook Llyn Fawr.

Contents

Map of Craig y Llyn, Port Talbot, UK

Description

Craig y Llyn is situated in Rhigos, which lies in the Cynon Valley in the Rhondda Cynon Taff, Wales.

The hill is covered by forestry, except for the steep north and northeast faces, and is crowned with a trig point. Several footpaths cross near the summit of the hill, including the Coed Morgannwg Way, and the county boundary between Neath Port Talbot and Rhondda Cynon Taff passes 200 m to the east of the summit. The highest point in Rhondda Cynon Taff, Craig y Llyn, is commonly known as the Rhigos Mountain after the village of Rhigos located on the northern side of the mountain in the Cynon Valley.

The Countryside Council for Wales states that the site has been categorised as a Site of Special Interest because it supports "...two special habitat features, and is also of special interest for a plant, the Water Lobelia. The first habitat feature is standing water, supporting aquatic plants typical of lakes with low nutrient content. Some of these plants are not known from anywhere further south in the UK. The second is dry heath, found on the slopes above the lakes.

Geology

The hill is composed of a thick sequence of sandstones and mudstones assigned to the South Wales Coal Measures. The summit plateau is formed from the Pennant Sandstone of the Upper Coal Measures. The two cwms on its northern flanks which shelter Llyn Fach and Llyn Fawr are of glacial origin. A landslipped mass of rock lies above the western end of the latter lake.

References

Craig y Llyn Wikipedia


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