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| Site of Special Scientific Interest | |
  Location within Wales | |
| Area of Search | Powys |
|---|---|
| Grid reference | SO0266747173 |
| Coordinates | 52°06′51″N3°25′22″W / 52.114282°N 3.4228349°W Coordinates: 52°06′51″N3°25′22″W / 52.114282°N 3.4228349°W |
| Interest | Biological |
| Area | 14.63 ha |
| Notification | 1 January 1972 |
Allt Cynhelyg is a semi-natural oak-hazel woodland forming a Site of Special Scientific Interest in Brecknock, Powys, Wales. It has a notable natural population of Meconopsis cambrica (Welsh poppy).
Powys is a principal area and county, and one of the preserved counties of Wales. It is named after the Kingdom of Powys which was a Welsh successor state, petty kingdom and principality that emerged during the Middle Ages following the end of Roman rule in Britain.
Wales is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, and the Bristol Channel to the south. It had a population in 2011 of 3,063,456 and has a total area of 20,779 km2 (8,023 sq mi). Wales has over 1,680 miles (2,700 km) of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon, its highest summit. The country lies within the north temperate zone and has a changeable, maritime climate.
