This reserve, once the site of extensive coal mining, is a great example of how nature has reclaimed the landscape. It is a rich mix of wildlflower meadow, rhos pasture and young woodland. It is one of the best sites in Wales for the rare marsh fritillary butterfly.
Trewalkin Meadow is a small, damp, flower-rich meadow at the foot of the Black Mountains between Llangorse and Talgarth. It is how much of Brecknock would have looked 60 years ago, before the habitat was lost due to changes in farming.
Allt Rhongyr is within the Brecon Beacons National Park, adjacent to Craig y Rhiwarth Nature Reserve and offers dramatic views of the Tawe Valley. It features a diverse mix of limestone grassland, acidic grassland and woodland and it was once the site of an iron age hillfort. The site is now managed by grazing under an agri-environment scheme.
The Pen y Waun nature reserve consists of two small fields situated on the edge of Waun-y-Mynach common. The fields were former garden plots for nearby cottages.
This reserve is a good example of a traditional wildflower meadow, a rare habitat in these days of intensively managed farmland where large quantities of both fertiliser and grazing animals are applied to meadows that may have once looked like this, but are now bright green with very few plant species surviving.
This reserve contains some of the finest examples of limestone plant communities in Brecknock. The reserve contains more than 400 species of trees, flowers, moss and lichens.