Site of Special Scientific Interest in Wales
Mynydd Llangyndeyrn is a Site of Special Scientific Interest (SSSI)[1] in Carmarthen & Dinefwr, Wales, and a hill reaching 263 metres (863 feet), which is a Marilyn.
Mynydd Llangyndeyrn and the SSSI are located west of Drefach and north of Pontyberem. The SSSI is approximately 1.3 miles (2.1 km) east-west and 0.3 miles (0.48 km) north-south, taking the approximate shape of a horns downwards shallow crescent.[1]
The SSSI citation for Mynydd Llangyndeyrn specifies that it is "notable as one of the larger upland semi-natural areas left in south-west Wales which, unlike most others, remains lightly grazed." The site features marshy grassland, wet heath, and dry heath, and hosts the marsh fritillary butterfly (Euphydryas aurinia).[2]
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