Bwrdd Arthur
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, also known as , is a flat-topped
limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
hill on the island of
Anglesey Anglesey ( ; ) is an island off the north-west coast of Wales. It forms the bulk of the Principal areas of Wales, county known as the Isle of Anglesey, which also includes Holy Island, Anglesey, Holy Island () and some islets and Skerry, sker ...
, in Wales. Located on the eastern end of Red Wharf Bay, some 3 kilometres north west of Llangoed, it is noteworthy from the evidence of pre-historic occupation and as a
Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...
designated for its botanical interest. The tiny medieval church of St Michael is on the eastern side of the hill fort.


Botany

The site has both calcareous heath and limestone exposures which between them support plant communities including western gorse ''
Ulex gallii ''Ulex gallii'', the western gorse or dwarf furzeA R Clapham, T G Tutin, E F Warburg, ''Flora of the British Isles'', Cambridge, 1962, p. 332 is an evergreen shrub in the pea family (Fabaceae), native to the Atlantic coasts of western Europe: sou ...
'', common rockrose '' Helianthemum nummularium'', pale St. John's wort '' Hypericum montanum'', Frog orchid '' Coeloglossum viride'', ivy broomrape '' Orobanche hederae'' and the nationally rare hoary rockrose '' Helianthemum canum''.


Archaeology

The whole site, which is in private ownership, is a
scheduled monument In the United Kingdom, a scheduled monument is a nationally important archaeological site or historic building, given protection against unauthorised change. The various pieces of legislation that legally protect heritage assets from damage, visu ...
and is believed to have been occupied as a significant hill fort both before and during the Roman invasion.


References

Llanddona Hillforts in Anglesey Mountains and hills of Anglesey Sites of Special Scientific Interest on Anglesey Scheduled monuments in Wales {{UK-SSSI-stub