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.

The site is managed sympathetically by the owner under an agri-environment scheme, which limits the number of grazing livestock in order to enhance the richness of its wildlife.

What to look out for:

The ash woodland has a ground flora that includes lily of the valley, wood spurge, wood fescue and various mosses. In one of the grassland areas of the reserve there is a large population of the rare soft-leaved sedge.

Some of the ledges on the limestone cliffs within the reserve provide a refuge for populations of nationally rare trees: the whitebeams Sorbus leptophylla and Sorbus porrigentiformis.

Turn off the A4067 beside the bridge over the River Tawe and continue along the narrow lane over Cwm Byfre to Pwllcoediog farm. Park carefully to avoid obstructions in the farmyard. Call at the farmhouse to check your parking and sign the visitor's book. Follow the bridleway south to the nature reserve. There is also foot access via Craig y Nos Country Park.

Nearest town: Glyntawe
OS map sheet 160. Grid reference SN 846 159

The reserve is open to visitors throughout the year and you are allowed to visit the reserve on foot for your quiet enjoyment of the wildlife present.

However the site is privately owned and permission should be sought from the owner Mr Williams of Pwllcoediog Farm, Pen-y-Cae (tel. 01639 730339), before visiting the site.

Dogs must be kept on a lead at all times. The site features many areas of scree, steep slopes and cliffs which should be avoided. In wet weather it is advisable to keep to site paths. The site can be very wet at any time of year.