Brecknockshire (Sir Frycheiniog), also known as the County of Brecknock, Breconshire, or the County of Brecon is one of thirteen historic counties of Wales, and a former administrative county.
SSSIs in the UK are notified using the concept of an Area of Search (AOS), an area of between and in size.
Powys is a principal area, a county and one of the preserved counties of Wales.
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 of Man.
Wales (Cymru) is a country that is part of the United Kingdom and the island of Great Britain.