Hatterrall Ridge: Difference between revisions
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==Geology== |
==Geology== |
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The hill is composed from [[sandstone]]s and [[mudstone]]s of the Senni Formation of the [[Old Red Sandstone]] which is of [[Devonian]] age. Numerous small quarries adorn its slopes though all are now abandoned. The shape of the [[Vale of Ewyas]] to the south and west of the ridge strongly suggests that it was occupied by a glacier during at least one ice age, though not perhaps during the last ice age.<ref>Humpage, J.A. and Thomas, G.S.P. in Carr, S.J. et al (eds) ''Quaternary of the Brecon Beacons: a field guide'' 2007 Quaternary Research Association p184</ref> The plateau was probably ice-free. |
The hill is composed from [[sandstone]]s and [[mudstone]]s of the Senni Formation of the [[Old Red Sandstone]] which is of [[Devonian]] age. Numerous small quarries adorn its slopes though all are now abandoned. The shape of the [[Vale of Ewyas]] to the south and west of the ridge strongly suggests that it was occupied by a glacier during at least [[Quaternary glaciation|one ice age]], though not perhaps during the [[Last glacial period|last ice age]].<ref>Humpage, J.A. and Thomas, G.S.P. in Carr, S.J. et al (eds) ''Quaternary of the Brecon Beacons: a field guide'' 2007 Quaternary Research Association p184</ref> The plateau was probably ice-free. |
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The ridge is often used for paragliding and hang gliding when the wind is from the east or east-north-east. |
The ridge is often used for paragliding and hang gliding when the wind is from the east or east-north-east. |
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Revision as of 05:18, 19 September 2015
The Hatterrall Ridge (sometimes spelled Hatterall) is a ridge in the Black Mountains forming the border between Powys and Monmouthshire in Wales and Herefordshire in England. The ridge is about 10 miles (16 km) long, and is followed by the Offa's Dyke Path. On the west side of the ridge is the Vale of Ewyas, and on the east side is the river Olchon Valley. The western side of the ridge falls within the Brecon Beacons National Park.
The highest point on the ridge is Black Mountain (elevation 703 m), near its northern end. Hatterrall Hill (elevation 531 m) is near the southern end of the ridge. The hill is common land grazed by sheep, ponies and cattle.[1]
Geology
The hill is composed from sandstones and mudstones of the Senni Formation of the Old Red Sandstone which is of Devonian age. Numerous small quarries adorn its slopes though all are now abandoned. The shape of the Vale of Ewyas to the south and west of the ridge strongly suggests that it was occupied by a glacier during at least one ice age, though not perhaps during the last ice age.[2] The plateau was probably ice-free.
The ridge is often used for paragliding and hang gliding when the wind is from the east or east-north-east.
References
- ^ Brecon Beacons National Park website
- ^ Humpage, J.A. and Thomas, G.S.P. in Carr, S.J. et al (eds) Quaternary of the Brecon Beacons: a field guide 2007 Quaternary Research Association p184