Black Hill (Herefordshire)

Black Hill
Black Hill
	Black Hill
Highest point
Elevation	640 m (2,100 ft)
Coordinates	52°00′26″N 3°03′24″W / 52.00722°N 3.05667°W
Geography
Location	Herefordshire, England
Parent range	Black Mountains
OS grid	SO274348

The Black Hill (also known as Crib y Gath) is a hill (elevation 640m) in the Black Mountains in Herefordshire, England at grid reference SO275348. It rises just west of the village of Craswall, near the border with Wales. The southern part of the ridge leading to the summit is a rocky knife-edge giving excellent views to either side. It is very similar to the main ridge of the Skirrid mountain near Abergavenny.

There is a very small parking and picnic area at the southern tip of the ridge, at the far end of minor roads leading from Longtown, Herefordshire. It is signposted at a road junction north of Longtown, and is shown on most Ordnance Survey maps of the area. The walk along the ridge to the trig point which marks the top of the hill can be continued on a well marked track to Hay Bluff, a prominent peak above Hay-on-Wye and the Gospel Pass. The path crosses several peat bogs and there is a small pool near the summit itself. Return can be made along the ridge or by a diversion along the Offa's Dyke Path along the Hatterall Ridge, and then by descent into the valley of the river Olchon.

The Black Hill is known locally as the 'Cat's Back' as viewed from Herefordshire it looks like a crouching cat about to pounce.

Geology

The distinctive shape of this Old Red Sandstone hill comprises a long ridge oriented roughly north-west/south-east. The upper slopes of the hill are composed of Devonian period sandstones, assigned to the Senni Formation.^[1] They overlie weaker mudstones of the St Maughans Formation - a situation which has contributed to the instability of the hill's steep flanks, resulting in small landslips at various points on the ridge. There are numerous other landslips of a similar nature on the nearby hills, especially that at Black Darren and Red Darren at the edge of the Hatterall Ridge to the south west, where the great size of the slippage dominates the side of the mountain. There is a yet larger landslip on the Skirrid, which is visible on the mountain from a great distance. Such landslips were probably formed at the end of the last Ice age when meltwater undermined the strata. There are many rock tables on the ridge of the Black Hill, where structural details such as rock jointing, can be seen more closely.

Fiction

Bruce Chatwin used the Black Hill as the setting for his novel On the Black Hill.

References

^ British Geological Survey 2004 Talgarth England and Wales, Sheet 214, Solid and drift geology. 1:50,000 (Keyworth, Nottingham: British Geological Survey)

External links

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[1] British Geological Survey 2004 Talgarth England and Wales, Sheet 214, Solid and drift geology. 1:50,000 (Keyworth, Nottingham: British Geological Survey)

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