Images like: River Elan Mid Wales (Showing 0 - 100 of 100,314)

Mid Wales, Radnorshire, Elan Valley, River Elan, Afon Elan, Autumn, Autumnal Light, River, Flowing, Moorland, Remote, Waterfall, Welsh Landscape, Wales Landscape, Rivers, IPSV1398,

Mid Wales, Elan Valley, River Elan, Afon Elan, Moorland, Remote, Rigged, Welsh Landscape, River, Flowing Water, Welsh Landscape, Autumn, Autumnal, Vertical Format, Rivers, IPSV1398,

Wales, Mid Wales, Powys, Radnorshire, Afon Elan, River Elan, Elan Village, Flowing Water, Rocks, Autumn, Autumnal, Rivers, IPSV1398,

Wales, Mid Wales, Powys, Radnorshire, Afon Elan, River Elan, Elan Village, Flowing Water, Rocks, Autumn, Autumnal,

Wales, Mid Wales, Powys, Radnorshire, Afon Elan, River Elan, Elan Village, Flowing Water, Rocks, Autumn, Autumnal,

UK, United Kingdom, Great Britain, Mid Wales, River Elan, Afon Elan, Elan Valley, Radnorshire, Elan Village, Autumn, Autumnal, Weir, Peaceful, Tranquil, Season, Seasonal, IPSV1398,

Mid Wales, Powys, Radnorshire, River Elan, Afon Elan, Moorland, Bleak, River, Deserted, Welsh Landscape, Rivers, IPSV1398,

UK, United Kingdom, Great Britain, Wales, Welsh, Mid Wales, Powys, Radnorshire, Elan Valley, Nant Gwyllt Waterfall, Falls, Stream, Cascading, Flowing, Picturesque, Scenic,

Waterfall, Garreg Ddu, Reservoir, Elan Valley, Mid Wales, Powys, Autumn, Autumnal, Falls, Cascade, Leaves, Leaf Litter, Sunny, Pretty, Picturesque, Wales, Welsh, UK, United Kingdom, Great Britain, British,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Claerwen Valley, Nant Gwyllt, Waterfall, Beechwood, Beech Woods, Falls, Autumn, Autumnal, Countryside,

UK, United Kingdom, Great Britain, Wales, Welsh, Powys, Radnorshire, Elan Valley, Waterfall, Birch Leaves, Oak Leaves, Autumn, Autumnal,

RHLAND, Mid Wales, Powys, Radnorshire, Elan Valley, Nant Gwylly Waterfall, Falls, Water, Stream, River, Autumn,

River; Elan; Mid Wales; Autumn; Autumnal; Fall; Trees; Boulders; Country; Landscape; Flowing; Rocks; Wales; Welsh; UK; United Kingdom; Great Britain; British;

Elan Valley; Autumn; Autumnal; Wales; Welsh; November; Sun; Sunny; Hills; Hillsides; Autumn Tints; Trees; Rocks; Uplands; Powys; Mid Wales; Radnorshire; UK; Landscape; United Kingdom; Great Britain; British;

Mid Wales, Elan Valley, Nant Gwyllt Waterfall, Stream, Autumn, Beech Leaves, Green, Mosses, Autumnal, Fall, Cascade, Boulders, Welsh, Rural,

Elan Valley; Autumn; Colour; Mid Wales; Sun; Sunny; Sunshine; Hillsides; Trees; Autumnal; Hills; Upland; Wales; Welsh; Powys; Radnorshire; Landscape; UK; United Kingdom; Great Britain; British;

Nant Gwyllt, Waterfall, Claerwen Valley, Elan Valley, Mid Wales, Powys, Radnorshire, Cascade, Cascading, Tumble, Tumbling, Close Up, Wales, Welsh, Landscape,

Elan Valley; Waterfall; Autumn; Wales; Cascade; Falls; Water; Flowing; Falling; Tumbling; Moss; Wood; Woods; Woodland; Mid Wales; Powys; UK; United Kingdom; Great Britain; British; Landscape;

Elan Valley; Autumn; Rainbow; Colour; Mid Wales; Sun; Sunny; Sunshine; Hillsides; Trees; Autumnal; Hills; Upland; Wales; Welsh; Powys; Radnorshire; Landscape; UK; United Kingdom; Great Britain; British;

UK, United Kingdom, Great Britain, Mid Wales, Welsh, Powys, Radnorshire, Elan Valley, Beech Trees, Beechwoods, Beech Woods, Autumn, Autumnal, Leaf Litter, Fagus Sylvatica, Wood, Woodland,

RHLAND, Mid Wales, Elan Valley, Nant Gwyllt Waterfall, Nant Gwyllt Stream, Waterfall, Cascade, Flowing, Wood, Woodland, Beech Woodland, Leaves, Moss, Green, Brown, Wales Waterfall, Welsh Waterfall,

Elan Valley; Autumn; Colour; Mid Wales; Reservoir; Garreg Ddu; Sun; Sunny; Sunshine; Hillsides; Trees; Autumnal; Hills; Upland; Wales; Welsh; Powys; Radnorshire; Landscape; UK; United Kingdom; Great Britain; British;

BEMWAT, Mid Wales, Powys, Radnorshire, Elan Valley, Waterfall, Shadows, Stream, Tumbling, Torrent, Flow, Water, River,

Waterfall; Elan Valley; Mid Wales; Cascade; Rocks; Ferns; Mosses; Wood; Woodland; Pretty; Picturesque; Scenic; Landscape; Wales; Welsh; Nant Gwyllt;

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, View, Vista, Panorama, Dam, Hills, Remote, Weather, Carreg Ddu Reservoir, Autumn, Foliage, Trees, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, View, Vista, Panorama, Dam, Hills, Remote, Weather, Carreg Ddu Reservoir, Autumn, Foliage, Trees, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Elan Valley, Quarry, Caban Coch Dam, Silver Birch, Radnorshire, Autumn, Autumnal, Sheep, Betula Pendula, IPSV0015,

UK, United Kingdom, Great Britain, Wales, Welsh, Landscape, Powys, Radnorshire, Elan Valley, Beauty Spot, Visitor Attraction, Garreg Ddu Dam, Water Supply, Autumn, Autumnal, IPSV1393,

Pump House; Garreg Ddu; Elan Valley; Mid Wales; Autumn; Autumnal; Sunny; Dam; Reservoir; Wales; Welsh; Powys; Radnorshire; Water Supply; Trees; Autumn Tints; Landscape; UK; United Kingdom; Great Britain; British;

UK, United Kingdom, Great Britain, Wales, Welsh, Landscape, Powys, Radnorshire, Elan Valley, Beauty Spot, Visitor Attraction, Garreg Ddu Dam, Water Supply, Autumn, Autumnal, Pump House, Copper Roof,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Craig Goch Dam, Reservoir, Landscape, Water Supply Source, Engineering in the Environment, Autumnal, Autumn, Colours, Brown, Orange, Welsh Countryside, Welsh Landscape, IPSV1393,

Elan Valley; Autumn; Colour; Mid Wales; Sun; Sunny; Sunshine; Graig Goch; Dam; Reservoir; Water Supply; Hillsides; Trees; Autumnal; Hills; Upland; Wales; Welsh; Powys; Radnorshire; Landscape; UK; United Kingdom; Great Britain; British;

Mid Wales, Powys, Elan Valley, Nant Gwyllt Stream, Waterfall, Falls, Woods, Woodland, Autumn, Autumnal, Beech Wood, Beechwood,

Mid Wales, Powys, Radnorshire, Elan Valley, Caban Coch Reservoir, Autumn, Autumnal, Autumn Tints, Lake, House, Cottage, Fall, Season, Seasonal,

Elan Valley, Autumn, Autumnal, Powys, Craig Goch, Graig Goch, Landscape, Dam, Uplands, Hills, Mid Wales, Sunny, Wales, Welsh, UK, United Kingdom, Great Britain, British, IPSV1393,

Mid Wales, Elan Valley, Autumn, Autumn Scene, Autumnal Scene, Autumnal Landscape, Pine Trees, Japanese Larch, Autumn Tints, Seasons, Seasonal, Forest, Forestry, Orange, Green, Brown, Fall, WHOJFM,

RHLAND, Mid Wales Elan Valley Powys Waterfall Autumn Leaf Litter Cascade Tumbling

Mid Wales, Claerwen Valley, Elan Valley, Nant Gwyllt Stream, Waterfall, Autumn, Autumnal, Fall, Beech Leaves, Mosses, Rock, Beech Wood, Woodland, Water, Stream, Tumbling, Cascade, Welsh, Landscape,

Elan Valley, Autumn, Autumnal, Powys, Craig Goch, Graig Goch, Reservoir; Landscape, Dam, Water Supply; Uplands, Hills, Mid Wales, Sunny, Wales, Welsh, UK, United Kingdom, Great Britain, British, IPSV1393,

Mid Wales, Powys, Radnorshire, Elan Valley, Caban Coch Reservoir, Autumn, Autumnal, Autumn Tints, Lake, House, Cottage, Fall, Season, Seasonal, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Reservoir, View, Vista, Panorama, Dam, Hills, Remote, Weather, Craig Goch, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, View, Vista, Panorama, Dam, Reservoir, Hills, Remote, Weather, Craig Goch, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, View, Vista, Panorama, Dam, Reservoir, Hills, Remote, Weather, Craig Goch, IPSV1393,

Penygarreg, Reservoir, Elan Valley, Radnorshire, Powys, Mid Wales, Landscape, Water Supply, Water Storage, Forest, Afforestation, Forestry, Upland, Moorland, Sunny, Summer, Wales, Welsh, IPSV1393,

Waterfall, river, brook, stream, water, wood, oak trees, oak wood, forest, path, forest walk, Elan Valley, reservoirs, mid Wales; Wales; UK; Britain; Landscapes; Landscape; Photograph; Countryside; Scenic; mountains; hills, Graham Coleman Photography, Snowdonia; North Wales;

A waterfall in a oak forest at Elan Valley, Mid Wales.

Penygarreg, Reservoir, Elan Valley, Radnorshire, Powys, Mid Wales, Landscape, Water Supply, Water Storage, Forest, Afforestation, Forestry, Upland, Moorland, Sunny, Summer, Wales, Welsh, IPSV1393, IPSV0503;

Waterfall, river, brook, stream, water, wood, oak trees, oak wood, forest, path, forest walk, Elan Valley, reservoirs, mid Wales; Wales; UK; Britain; Landscapes; Landscape; Photograph; Countryside; Scenic; mountains; hills, Graham Coleman Photography

Waterfall in Elan Valley, Mid Wales

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Rainbow, View, Vista, Panorama, Reservoir, Hills, Remote, Weather, Craig Goch, IPSV1393,

Silver Birch; Tree; Birch; Betula pendula; Mid Wales; Autumn; Autumnal; Blue Sky; Sunny Day; Elan Valley; November; River Bank; Riverbank; River Elan; Elan Valley; Golden Leaves; Autumn Tints;

elan; valley; wales; Carmarthenshire; powys; river; Afon; water; rocks; trees; countryside; peaceful; postcard

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Rainbow, View, Vista, Panorama, Dam, Reservoir, Hills, Remote, Weather, Craig Goch, Double Rainbow, IPSV1393,

UK, United Kingdom, Great Britain, Mid Wales, Powys, Radnorshire, Elan Valley, Farmhouse, Farm House, Hillside, Remote,

Mid Wales, Powys, Radnorshire, Elan Village, Autumn, Autumnal, Tree, House Window, Elan Valley,

UK, United Kingdom, Great Britain, British, Mid Wales, Wales, Welsh, Powys, Radnorshire, Elan Valley, Craig Goch Dam, Reservoir, Trees, Autumn, Uplands, Hills, IPSV1393,

Caban Coch Reservoir, Elan Valley, Radnorshire, Mid Wales, Powys, Welsh, UK, United Kingdom, Great Britain, British, Cascade, Water Supply, Flow, Flowing, Landscape, Hills, Woods, Forests, Picturesque, Scene, Scenic, IPSV1393,

Mid Wales, Nant Gwyllt Waterfall, Elan Valley, Woodland, Spring, Springtime, Tumbling Water, Cascade,

Mid Wales; Elan Valley; Waterfall; Dragon; Tree Stump; Stream; Wales; Welsh; Welsh Dragon; Mythical; Legend; Imagination;

Tree Stump looking like a dragon in the Elan Valley Mid Wales

Mid Wales, Claerwen Valley, Nant Gwyllt, Stream, River, Rock, Wet, Welsh, Leaves, Autumn, Autumnal, Fall, Close Up, Landscape, Falls, Waterfall, Tumbling, Cascade,

West Wales, Mid Wales, Claerwen, River, Afon, Rocks, Wilderness, Cambrian Mountains, Uplands, Hill Country, Welsh, Landscape, Waterfall, Fall, Flowing, Cascade, Cascading,

West Wales, Mid Wales, Claerwen, River, Afon, Rocks, Wilderness, Cambrian Mountains, Uplands, Hill Country, Welsh, Landscape, Waterfall, Falls, Cascade, Cascading, Flowing,

West Wales, Mid Wales, Claerwen, River, Afon, Rocks, Wilderness, Cambrian Mountains, Uplands, Hill Country, Welsh, Landscape, Close Up, Waterfall, Cascade, Flowing, Water,

Wales, Vale of Neath, Horseshoe Falls, Horseshoe Waterfall, River Neath, Afon Nedd, Autumn, Autumnal, Orange, Brown, Cascade, Flowing, Cascading, Welsh Landscape, River, Water, Limestone, Limestone Country,

Mid Wales, Powys, Autumn, Autumnal, Trees, Elan Valley, Larch, Conifers, Autumn Tints, Colours, Brown, Orange, Season, Seasonal, Forest, Forestry, Vertical, Portrait Format, Afforestation, Fall,

Waterfall; Elan Valley; Mid Wales; Wales; UK;

One of several waterfalls tumbling into the Garreg Ddu reservoir in the Elan Valle

Waterfall; Elan Valley; Mid Wales; Wales; UK;

One of several waterfalls tumbling into the Garreg Ddu reservoir in the Elan Valle

Wales, Mid Wales, Powys, Radnorshire, Elan Valley, Carreg Ddu, Control House, Autumn, Autumnal, Fall, Dam, Reservoir, Water Source, Water Supply, IPSV1393,

Confluence; two rivers; River Neath; Afon Nedd; River Pyrddin; Afon Pyrddin; Vale of Neath; Brecon Beacons; National Park; south Wales; Autumn; Autumnal; Fall; Flowing Water; River; Wales; Welsh; Geography; Geomorphology; Wood; Woodland; Landscape; Movement; Country; Rural; Countryside; UK; United Kingdom; Great Britain; British;

The confluence of the River Neath and the River Pyrddin in the Upper Vale of Neath south Wales.

Wales, RHLAND, Brecon Beacons National Park, Mynydd Du, Black Mountain, River Tawe, Afon Tawe, Falls, Waterfall, Upland, Remote, River, Welsh Landscape, Water, Cascade,

Waterfall; Falls; Washpool; River Irfon; Mid Wales; Afon Irfon; River; Wales; Welsh; Flowing; Cascading;

Washpool Waterfalls on the River Irfon

UK, United Kingdom, Great Britain, Wales, Welsh, Landscape, Powys, Radnorshire, Elan Valley, Beauty Spot, Visitor Attraction, Garreg Ddu Dam, Water Supply, Autumn, Autumnal, IPSV1393,

UK, United Kingdom, Great Britain, Wales, Welsh, Landscape, Powys, Radnorshire, Elan Valley, Beauty Spot, Visitor Attraction, Garreg Ddu Dam, Water Supply, Autumn, Autumnal, IPSV1393,

Mid Wales, Claerwen Valley, Nant Gwyllt Stream, Waterfall, Falls, Rock, Autumn, Autumnal, Fall, Beech Leaves, Autimn Scene, Flowing, Cascading, Leaf Litter,

RHLAND, Autumn, Pine Trees, Elan Valley, Mid Wales, Powys, Season, Seasonal, Tints, Autumnal, Forest, Forestry,

UK, United Kingdom, Great Britain, Wales, Mid Wales, Powys, Radnorshire, Elan Valley, Penygarreg Dam, Pen y Garreg, Water Supply Severn Trent, Cascading, Flowing, Over the Dam, Visitor Attraction, Picturesque, Scenic, Frothing, IPSV1393,

Silver Birch; Tree; Birch; Betula pendula; Mid Wales; Autumn; Autumnal; Blue Sky; Sunny Day; Elan Valley; November; River Bank; Riverbank; River Elan; Elan Valley; Golden Leaves; Autumn Tints;

Confluence; two rivers; River Neath; Afon Nedd; River Pyrddin; Afon Pyrddin; Vale of Neath; Brecon Beacons; National Park; south Wales; Autumn; Autumnal; Fall; Flowing Water; River; Wales; Welsh; Geography; Geomorphology; Wood; Woodland; Landscape; Movement; Country; Rural; Countryside; UK; United Kingdom; Great Britain; British; Walking Country;

The confluence of the River Neath and the River Pyrddin in the Upper Vale of Neath south Wales.

RHLAND, Mid Wales, Powys, Radnorshire, Afon Irfon, River Irfon, Waterfall, River, Tumbling Water, Cascade,

Garreg Ddu; Reservoir; Elan Valley; Autumn; Autumnal; Fall; Mid Wales; Landscape; Welsh; Wales; UK; Water Supply;

Garreg Ddu; Reservoir; Elan Valley; Autumn; Autumnal; Fall; Mid Wales; Landscape; Welsh; Wales; UK; Water Supply;

Garreg Ddu; Reservoir; Elan Valley; Autumn; Autumnal; Fall; Mid Wales; Landscape; Welsh; Wales; UK; Water Supply;

UK, United Kingdom, Great Britain, Wales, Mid Wales, Powys, Radnorshire, Elan Valley, Penygarreg Dam, Pen y Garreg, Water Supply Severn Trent, Cascading, Flowing, Over the Dam, Visitor Attraction, Picturesque, Scenic, Rainbow, IPSV1393,

River; Rocks; Rushing; Doethie; Mid Wales; Landscape; Wales; Welsh; Flowing; Rural; Upland; Moorland;

River Doethie near Dinas Rock in Mid Wales. The Doethie is a tributary of the River Tywi.

Country; Countryside; Elan Valley; Landscape; Leisure; Nature; Radnorshire; Powys; Rambling; UK; Walking; Mid Wales; Radnorshire; Reservoir; Water

Wales, River, Rocks, Water, Elan Valley, Powys, Mid Wales, Nature, flowing, hillside, Landscape

Rocks in River in the Elan Valley,Powys,Mid Wales

Mid Wales, Elan Valley, Nant Gwyllt Stream, Nant Gwyllt Waterfall, Woodland, Beech Woods, Cascade, Tumbling, Spring, Springtime, Woodland Landscape, Woodland Scene,

Mid Wales, Elan Valley, Nant Gwyllt Stream, Nant Gwyllt Waterfall, Woodland, Beech Woods, Cascade, Tumbling, Spring, Springtime, Woodland Landscape, Woodland Scene,

Waterfall; Powys; Radnorshire; Elan Valley Nant Gwyllt Waterfall; Nant Gwyllt Stream; Water; Tumbling; Falls; Stream; Woodland; Beech Wood; Moss; Beech Leaves; Claerwen; Construction; Dam; Elan Valley; Elanydd; Engineering; Pattern; Reservoir; Shapes; Stone Walls; Symmetry; Tall; Wales; Water; Powys; Nigel Cummings; mid Wales; spring; summer; seasonal; water; Birmingham water; Frankley Reservoir; Frankley; Drinking water

UK, United Kingdom, Great Britain, Wales, Mid Wales, Powys, Radnorshire, Elan Valley, Penygarreg Dam, Pen y Garreg, Water Supply Severn Trent, Cascading, Flowing, Over the Dam, Visitor Attraction, Picturesque, Scenic, IPSV1393,

River; Neath; Afon; Nedd; Autumn; Autumnal; Flowing; Leaves; Leaf Litter; Rocks; Pebbles; South Wales; Welsh; Landscape; Vale of Neath; Water; Nature; Wales; UK; United Kingdom; Great Britain; British; IPSV1398;

The River Neath in autumn flowing over rocks, South Wales

Waterfall; Falls; River; River Neath; Vale of Neath; Afon Nedd; Autumn; Flowing Water; Cascading Water; Picturesque; Scenic; Countryside; Brecon Beacons; National Park; South Wales; Wales; Welsh;

Waterfall; Falls; River; River Neath; Vale of Neath; Afon Nedd; Autumn; Flowing Water; Cascading Water; Picturesque; Scenic; Countryside; Brecon Beacons; National Park; South Wales; Wales; Welsh;

Waterfall; Falls; River; River Neath; Vale of Neath; Afon Nedd; Autumn; Flowing Water; Cascading Water; Picturesque; Scenic; Countryside; Brecon Beacons; National Park; South Wales; Wales; Welsh;

Upper Ddwli Falls; Waterfall; River; River Neath; Afon Nedd; Vale of Neath; Autumn; Autumnal; Wales; Landscape; Welsh; Sunny; Falls; Trees; Woods; Woodland; Sun; Sunshine; Picturesque; Scenic; Photogenic; UK; United Kingdom; Great Britain; British; Wooded Valley;

; Radnorshire; Elan Valley Nant Gwyllt Waterfall; Nant Gwyllt Stream; Water; Tumbling; Falls; Stream; Woodland; Beech Wood; Moss; Beech Leaves; Claerwen; Construction; Dam; Elan Valley; Elanydd; Engineering; Pattern; Reservoir; Shapes; Stone Walls; Symmetry; Tall; Wales; Water; Powys; Nigel Cummings; mid Wales; spring; summer; seasonal; water; Birmingham water; Frankley Reservoir; Frankley; Drinking wate

River; Irfon; Abergwesyn; Abergwesyn Common; Mid Wales; Wales; Welsh; Moorland; Remote; Water; Flowing; Hillside; Landscape; IPSV1398;

River Irfon at Abergwesyn Common in Mid Wales

Caban Coch, Reservoir, Claerwen Valley, Elan Valley, Powys, Mid Wales, Water Supply, Landscape, Reeds, Uplands. Farmland, Countryside, Autumn, Autumnal, Woods, Woodland, Picturesque, Scenic, Welsh, Wales, UK, United Kingdom, Great Britain, British, IPSV1393,

UK, United Kingdom, Great Britain, Wales, Mid Wales, Powys, Radnorshire, Elan Valley, Carreg Ddu, Control House, Autumn, Autumnal, Fall, Dam, Reservoir, Water Source, Water Supply, Hillside, Trees, Silver Birch, IPSV1393,

Posy; Radnorshire; Elan Valley Nant Gwyllt Waterfall; Nant Gwyllt Stream; Water; Tumbling; Falls; Stream; Woodland; Beech Wood; Moss; Beech Leaves; Claerwen; Construction; Dam; Elan Valley; Elanydd; Engineering; Pattern; Reservoir; Shapes; Stone Walls; Symmetry; Tall; Wales; Water; Posy; Nigel Cummings; mid Wales; spring; summer; seasonal; water; Birmingham water; Frankley Reservoir; Frankley; Drinking water

Powys; Radnorshire; Elan Valley Nant Gwyllt Waterfall; Nant Gwyllt Stream; Water; Tumbling; Falls; Stream; Woodland; Beech Wood; Moss; Beech Leaves; Claerwen; Construction; Dam; Elan Valley; Elanydd; Engineering; Pattern; Reservoir; Shapes; Stone Walls; Symmetry; Tall; Wales; Water; Powys; Nigel Cummings; mid Wales; spring; summer; seasonal; water; Birmingham water; Frankley Reservoir; Frankley; Drinking water

Powys; Radnorshire; Elan Valley Nant Gwyllt Waterfall; Nant Gwyllt Stream; Water; Tumbling; Falls; Stream; Woodland; Beech Wood; Moss; Beech Leaves; Claerwen; Construction; Dam; Elan Valley; Elanydd; Engineering; Pattern; Reservoir; Shapes; Stone Walls; Symmetry; Tall; Wales; Water; Powys; Nigel Cummings; mid Wales; spring; summer; seasonal; water; Birmingham water; Frankley Reservoir; Frankley; Drinking water