The predominant species in Coed Rhydymarchog is oak. Along the old earth banks which divide parts of the north-western end of the woodland are lines of mature oak, markers for old boundaries, and a lovely mature beech in a couple of places. Mature oak line the southern boundary along the golf course. Further into the woodland, following the path along the western boundary you'll come across a statuesque sycamore, and within the woodland, amongst these more mature specimens, is a healthy understory including holly and hazel. Some of the hazel, overstood coppice stools, have grown on to quite a large size and perhaps could be restored to some extent. Even an intermittent thinning provides useful hazel poles for garden, woodland or household use.

There is also wild bilberry, bramble, fern and wildflowers, including ancient woodland indicators such as oxalis underfoot and honeysuckle twines through trees.

A water source, broadleaf woodland and a predominance of oak are all hugely attractive to wildlife and the clamour of bird song here certainly reflects that. The familiar robin, wren and blackbird are seen and heard; also chiff chaff and wood warbler with its distinctive call, as well as the unmistakable knocking of the woodpecker. Overhead, red kites are regularly seen circling on the thermals.

A good sized stream springs just inside the south western boundary and cuts through the woodland, down a fairly steep gully before meeting the track which makes up Coed Rhydymarchog's northern boundary, continuing under the track, through a culvert.

A public footpath enters Coed Rhydymarchog at its south western point and then runs all the way along the inside of its fenced western boundary, before crossing the eastern tip of neighbouring woodland Coed Telor, and continuing downhill through Allt Gorllewin to the meet the main access track at the bottom of the valley, near the main entrance gate to Cwm Tawel.

The first sections of the shared vehicle access tracks are easily accessible to a two wheel drive vehicle, with the main entrance opening directly off the main road; however the last part of the tracks up to Coed Rhydymarchog are in part steep and also narrow and only suitable for a four wheel drive vehicle.

A lovely woodland for camping and wildlife watching.

Nearby is the Dan-y-Coed Halt, the end of the line of the 4 mile stretch of the Gwili Railway, one of the last few stretches of functioning steam railway in the U.K. The 8 mile round trip takes you through four stations along the picturesque railway line which runs along the Afon Gwili through steeply wooded hillsides.

Carmathen Golf Course borders Coed Rhydymarchog on its southern boundary and can be accessed via the public footpath, so quick round anyone....?