Bewick and Beanley Moors in association with old collapsing heather bushes. Conifer plantations aside, the moors have little woodland cover; what exists is found on the boundaries and following the paths of streams at lower elevations. Spwecies include alder ("Alnus glutinosa"), hawthorn ("Crataegus monogyna"), brown birch ("Betula pubescens"), rowan ("Sorbus aucuparia") and occasional ash ("Fraxinus excelsior"), and ground-cover of yellow pimpernel ("Lysimachia nemorum"), wood sorrel ("Oxalis acetosella") and smooth-stalked sedge ("Carex laevigata"). As with the bogs, so the woodland also provide transition locations, such as from wet birch-wood to purple moor-grass or to bogs of lesser pond-sedge ("Carex acutiformis"). Other wood species found include
Mountain Ash, Rhondda Cynon Taf the Aberdare branch of the Merthyr Line of the Transport for Wales rail network. Further to Mountain Ash railway station, the village of Fernhill and Penrhiwceiber is also served by the Aberdare line. Bus services are operated by Stagecoach in South Wales. An early British railway line had developed from the industrial development within the South Wales Valleys, which with its core centred around Mountain Ash became known as the Mountain Ash Railway (MAR). Having developed from an early tramway, it became in the 1970s the last core of steam locomotive operations in the UK. Developed by Powell Duffryn as