St Non's Bay

St Non's Bay
Name	St Non's Bay
Other name	Trenarren Bay
Location	Pembrokeshire, Wales
Coordinates	51.477°N 5.131°W
Type	Bay
Length	0.5 km

St Non's Bay is a small coastal bay on the western shore of Pembrokeshire Coast National Park in Pembrokeshire, Wales. It is notable for its layered geology of folded sedimentary rocks, a medieval chapel site associated with legendary saints, and a concentration of prehistoric and historic artifacts. The bay lies adjacent to a coastal path and attracts visitors for its scenery, archaeology, and wildlife.

Geography

St Non's Bay sits on the north side of St David's Peninsula near the settlement of St Davids and immediately west of Ramsey Island (visible offshore). The bay is fronted by a narrow shingle and sand beach bounded by steep cliffs composed of folded Ordovician and Silurian mudstones that belong to regional successions mapped across South Wales and North Pembrokeshire. Water from local streams drains into the bay and the intertidal zone exposes rock platforms used by field teams from institutions such as the British Geological Survey and regional university geology departments. The bay lies within the Pembrokeshire Coast Path section of the Wales Coast Path and is recorded on nautical charts published by the Admiralty for the Irish Sea approaches to St George's Channel.

History

The shoreline has a long human history stretching from prehistoric occupation through medieval Christian activity to modern conservation management. Archaeological surveys by teams affiliated with Cadw, Dyfed Archaeological Trust, and university departments have documented features including prehistoric field systems similar to those recorded at Marloes Sands and medieval chapels comparable to those at other Pembrokeshire chapels. The bay and surrounding hinterland were within the medieval parish boundaries connected to the Diocese of St Davids and were affected by landholding changes noted in records relating to the Norman invasion of Wales and subsequent marcher lordships such as those associated with Haverfordwest and Pembroke Castle. 19th-century Ordnance Survey mapping and antiquarian accounts by figures like Samuel Lewis described the chapel ruins and local traditions. In the 20th century, conservation designations by bodies including the Nature Conservancy Council and later Natural Resources Wales formalized protection for parts of the coastline.

Archaeology and Heritage

Remains at the chapel site above the bay have been the subject of archaeological excavation and antiquarian notice. Investigations overseen by Cadw and regional archaeologists recovered structural footprints, reused Romanesque masonry comparable to elements at St Justinian's Church and domestic material culture analogous to assemblages from coastal sites like Bosherston and Skokholm Island. Lithic scatters and possible enclosure earthworks link the area to broader prehistoric landscapes of Pembrokeshire, including parallels with the Neolithic monuments at Pentre Ifan and Bronze Age features recorded at Castell Henllys. Artefacts recovered by local antiquarians and museum curators have entered collections at institutions such as the National Museum Wales and the Ceredigion Museum. The heritage value is recognised through scheduling and listing processes administered by Cadw and inclusion on local historic environment records managed by the Dyfed Archaeological Trust.

Religious Significance

Local tradition associates the chapel ruin on the headland above the bay with Saint Non and with Saint David, linking the location to hagiographic narratives preserved in medieval Welsh sources and ecclesiastical records of the See of St Davids. Pilgrimage to sites associated with David formed part of medieval devotional practice in Wales, and the bay's chapel is one node in that network alongside major sites such as St Davids Cathedral and smaller chapels at coastal parishes. The place features in ecclesiastical topographies compiled by antiquaries and in the liturgical geography referenced by the Diocese of St Davids. Modern religious interest combines heritage tourism with occasional services and commemorative acts organised by local parishes and heritage organisations like Friends of Friendless Churches.

Ecology and Environment

The bay lies within a mosaic of habitats managed under designations applied by Natural Resources Wales and is adjacent to the Pembrokeshire Coast National Park and marine monitoring areas used by organisations such as the Marine Conservation Society. Cliff-top grassland and maritime heath support flora and bird species comparable to those on nearby islands like Skomer and Skokholm Island; recorded avifauna include species monitored by the Royal Society for the Protection of Birds and survey teams from universities. Intertidal rock pools and seagrass beds host invertebrate assemblages of interest to researchers at the Marine Biological Association and local naturalists. Conservation concerns mirror regional priorities: coastal erosion documented in reports by the Environment Agency and invasive species management actions coordinated with county biodiversity officers in Pembrokeshire County Council.

Recreation and Access

Public access follows the Pembrokeshire Coast Path and local footpaths managed by Pembrokeshire Coast National Park Authority. Visitors arrive from nearby St Davids and use car parks and waymarked routes; access is subject to tidal constraints and cliff safety advisories issued by the Royal National Lifeboat Institution and local authorities. Recreational activities include coastal walking, birdwatching promoted by the RSPB and field meetings organised by the Cambrian Archaeological Association, and shoreline study by groups such as the Field Studies Council. Interpretive signage and heritage information are provided by local museums and by volunteers linked to the Pembrokeshire Coast National Park Authority and community history societies.

Category:Pembrokeshire Category:Bays of Pembrokeshire