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Wye Valley
The Wye Valley (Welsh: Dyffryn Gwy) is a valley in Wales and England. The River Wye (Welsh: Afon Gwy) is the fourth-longest river in the United Kingdom.
The upper part of the valley is in the Cambrian Mountains and is enclosed by hills as it descends through Rhayader, Builth Wells and Hay-on-Wye before reaching the England-Wales border and becoming a broader vale through Hereford. The lower part of the valley meanders past Ross-on-Wye and Monmouth, where it becomes the England-Wales border, before reaching the Severn Estuary at Chepstow. Much of this section features limestone gorge scenery and dense native woodlands, which made the Wye Valley historically important as one of the birthplaces of the modern tourism industry.
The lower part of the valley is designated as the Wye Valley National Landscape, an Area of Outstanding Natural Beauty, protected as an internationally important landscape. This designation covers 326 square kilometres (126 mi2) surrounding a 72-kilometre (45 mi) stretch of the river, from just south of Hereford to Chepstow in the counties of Gloucestershire, Herefordshire and Monmouthshire. In addition to its landscape value, the area is recognised for its wildlife and archaeological and industrial remains.
The varied landscapes of the Wye Valley can be explained by underlying rocks and structures, and how ice and then the river and tributary streams have acted upon them through time.
Close to Hereford, the geology of the area around the village of Woolhope is largely made up of Silurian limestones, shales and sandstones. To the south of this, the Herefordshire lowlands are largely underlain by red mudstones and sandstones, producing a redder soil. These rocks are softer than the limestones elsewhere, so the river created more meanders, a wider floodplain, and a gentler and more rolling landscape. Around Symonds Yat, limestones and red sandstones meet. This leads to a landscape of hills and plains, as well as substantial meanders which have formed impressive river cliffs.
The Lower Wye landscape was formed by the river acting on a series of layers of rock that dip towards the Forest of Dean. Here the river has incised into the margins of the Old Red Sandstone plateau to form a gorge with substantial river cliffs. The steepest parts of the Wye gorge are cut through the Carboniferous Limestone. Here the combined action of the river, natural joints in the rocks and quarrying have exposed many vertical faces, particularly between Tintern and Chepstow.
Geological interest extends underground, and there are many rock shelters and solution caves in the area. These include King Arthur's Cave and many others in the area of Symonds Yat and Slaughter Stream Cave near Berry Hill. At St Arvans, near Chepstow, the underground watercourses have carved out long cave systems, which exit at Otter Hole at the base of Piercefield cliffs – the only cave system in England or Wales which can only be reached through a tidal sump, making it a mecca for experienced cavers.
Lancaut and Ban-y-Gor are Gloucestershire Wildlife Trust nature reserves. They both have SSSI status being part of the nationally important Lower Wye Gorge SSSI and within the Wye Valley National Landscape. The Wye Valley is important for its rich wildlife habitats including ancient gorge woodland, saltmarsh and limestone cliffs.
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Wye Valley
The Wye Valley (Welsh: Dyffryn Gwy) is a valley in Wales and England. The River Wye (Welsh: Afon Gwy) is the fourth-longest river in the United Kingdom.
The upper part of the valley is in the Cambrian Mountains and is enclosed by hills as it descends through Rhayader, Builth Wells and Hay-on-Wye before reaching the England-Wales border and becoming a broader vale through Hereford. The lower part of the valley meanders past Ross-on-Wye and Monmouth, where it becomes the England-Wales border, before reaching the Severn Estuary at Chepstow. Much of this section features limestone gorge scenery and dense native woodlands, which made the Wye Valley historically important as one of the birthplaces of the modern tourism industry.
The lower part of the valley is designated as the Wye Valley National Landscape, an Area of Outstanding Natural Beauty, protected as an internationally important landscape. This designation covers 326 square kilometres (126 mi2) surrounding a 72-kilometre (45 mi) stretch of the river, from just south of Hereford to Chepstow in the counties of Gloucestershire, Herefordshire and Monmouthshire. In addition to its landscape value, the area is recognised for its wildlife and archaeological and industrial remains.
The varied landscapes of the Wye Valley can be explained by underlying rocks and structures, and how ice and then the river and tributary streams have acted upon them through time.
Close to Hereford, the geology of the area around the village of Woolhope is largely made up of Silurian limestones, shales and sandstones. To the south of this, the Herefordshire lowlands are largely underlain by red mudstones and sandstones, producing a redder soil. These rocks are softer than the limestones elsewhere, so the river created more meanders, a wider floodplain, and a gentler and more rolling landscape. Around Symonds Yat, limestones and red sandstones meet. This leads to a landscape of hills and plains, as well as substantial meanders which have formed impressive river cliffs.
The Lower Wye landscape was formed by the river acting on a series of layers of rock that dip towards the Forest of Dean. Here the river has incised into the margins of the Old Red Sandstone plateau to form a gorge with substantial river cliffs. The steepest parts of the Wye gorge are cut through the Carboniferous Limestone. Here the combined action of the river, natural joints in the rocks and quarrying have exposed many vertical faces, particularly between Tintern and Chepstow.
Geological interest extends underground, and there are many rock shelters and solution caves in the area. These include King Arthur's Cave and many others in the area of Symonds Yat and Slaughter Stream Cave near Berry Hill. At St Arvans, near Chepstow, the underground watercourses have carved out long cave systems, which exit at Otter Hole at the base of Piercefield cliffs – the only cave system in England or Wales which can only be reached through a tidal sump, making it a mecca for experienced cavers.
Lancaut and Ban-y-Gor are Gloucestershire Wildlife Trust nature reserves. They both have SSSI status being part of the nationally important Lower Wye Gorge SSSI and within the Wye Valley National Landscape. The Wye Valley is important for its rich wildlife habitats including ancient gorge woodland, saltmarsh and limestone cliffs.
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