This area of land is part of the Berwyn Ranges that has been designated as a Special Area for Conservation (SAC) and a Special Protection Area (SPA). The Berwyn is the long spine of moorland stretching from Llangollen to Dinas Mawddwy and is one of the largest and most attractive areas of upland heath remaining in Wales. Moorlands are uncultivated areas with short, rough plantlife, usually on poor soils. Heather, grassland, and bracken clad the steep slopes while crowberry and the occasional lesser twayblade are seen here. The heathland is of very high quality and has heather at many different growth stages. The Berwyn also supports the most extensive area of near-natural blanket bog in Wales. The gently contoured ridges are blanketed with deep wet peat dominated by heather, heathland mosses, and cotton grass. The attractive white-flowered and orange berried cloudberry is found close to the southernmost limit of its British range. The Berwyn has one of the most diverse moorland breeding bird populations south of the Scottish highlands with birds such as red grouse, black grouse that take cover and feed on the heather, while birds of prey like merlin, hen harrier, and peregrine falcon soar high above it.