, Libanus, Powys Wales UK Website
High in the Brecon Beacons this reserve was once part of an area known as the Great Forest, although it is not strictly a forested area but an ancient hunting and farming forest. A small reminder of a forest is seen in the scrub woodland and scattered hawthorn on the lower slopes of the reserve. The steep sided crags of Craig Cerrig Gleisiad and Cwm Du together with the escarpment of Fan Frynych and the lumpy moraines at lower
levels are all evidence of the movement of huge rivers of ice during the last Ice Age. The artic-alpine plants are some of the most interesting features of this site. The most inaccessible cliffs and crags provide refuge from grazing sheep for this rare vegetation. A variety of upland birds can also be seen here including peregrine and ring ouzel.
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