 Mudstone layers within these sandstones are more readily eroded and have given rise to the stepped appearance of parts of the mountain, not least the summit section.Peat has accumulated on parts of the hill in the postglacial period, notably north towards Waun Fach.The hill is wholly within land mapped under the Countryside and Rights of Way Act 2000 as open country and hence is legally accessible to walkers despite their being no public rights of way leading to it.