Mixed woodland: The product of some planting over the last 50-60 years, and lots and lots of natural regeneration. As well as the lovely row of huge poplar trees along the north edge of the site, you'll find oak, willow, alder, hazel, rowan, wild cherry, and many more.

Conifer plantation: Planted in the 70s and 80s, sitka spruce predominates - on paper there are some Norway spruce in there too. Some areas have been well-thinned, and the spruce stands tall and alone; in others, natural regeneration of other species - and little to no intervention - has given us dark, crowded areas - damp and very atmospheric. Spruce is still planted widely as a commercial crop - it grows quickly and loves the rain. Some of our conifers will be thinned out to let more light in some areas so other species can thrive, and also to allow us to plant a wider range of trees.

Cilieni River: The Afon Cilieni rises on the southern slopes of Mynydd Epynt - passing through Pentre-bach and our woodland's eastern boundary as it makes its way to the River Usk. (As an important tributary to the Usk, the Cilieni has SSSI status: designated as a special area of conservation for various fish including three species of lamprey, twaite shad and European bullhead.)

The Cilieni's upper reaches are within the military training area of SENTA, the British Army's Sennybridge Training Area, and its not uncommon to hear booms and batters of simulated (and sometimes live) fire as the military exercises.

Much of the length of the river is followed by the abandoned earthworks of the intended rail line to Llanwrtyd Wells, an offshoot of the Neath and Brecon Railway. Cuttings and embankments remain but none of the many bridge crossings of the Cilieni are known to have been put in place before the scheme was abandoned in the 1860s.