| Fan Nedd | |
|---|---|
 | |
| Highest point | |
| Elevation | 663 m (2,175 ft) |
| Prominence | 174 m (571 ft) |
| Parent peak | Fan Gyhirych |
| Listing | Marilyn,Hewitt,Nuttall |
| Coordinates | 51°51′10″N3°34′45″W / 51.8529°N 3.5792°W /51.8529; -3.5792 |
| Naming | |
| English translation | Neath beacon |
| Language of name | Welsh |
| Geography | |
 | |
| Location | Powys,Wales |
| Parent range | Brecon Beacons |
| OS grid | SN913184 |
| Topo map | OSLandranger 160 |
Fan Nedd is amountain in theFforest Fawr area of theBrecon Beacons National Park inWales. In common with the rest of the Fforest Fawr uplands it is within the county ofPowys.[1]
The hill is in the form of a broad flat-topped ridge whose summit lies at 663 m (2175 ft) and is crowned by atrig point. Its southern ridge is the least steep whereas its northern aspect is steep and craggy, having hosted a small glacier in the last ice age.
A prominent modern cairn marks the northern end of the plateau whilst a couple of ancient cairns are to be found on its eastern slopes. The hill is drained to the west by a number of streams running into theNedd Fechan river whilst to the east, rainwater spills into the upper reaches of theAfon Llia. Both ultimately drain via theRiver Neath to the sea atSwansea Bay. Its northern face overlooks the deep glacial hollow of Blaen Senni drained by theAfon Senni, a tributary of theRiver Usk. The hill presumably takes its name from that of the river.
The hill is formed largely from sandstones of the Brownstones Formation of theOld Red Sandstone dating from theDevonian period. Sandstones of the overlying Plateau Beds Formation extend some way up the southern slopes of the hill though bedrock is for the most part concealed beneath a blanket ofglacial till and hillpeat. Only on its northern face is rock exposed to any significant degree. The hill is within theFforest Fawr Geopark designated in 2005 in recognition of the area's geological heritage.[2]
The entire hill is designated as open country so walkers may wander at will though most prefer to follow a path which skirts the rim of the steep northern face between Bwlch y Duwynt to the west and the minor road between the villages ofYstradfellte and Heol Senni to the east.[3]