Scotland, Scottish Borders, Liddesdale. Detail of a fast flowing stream found in Liddesdale.

Scotland, Scottish Borders, Liddesdale. Liddel Water flowing through a bridge in Liddesdale.

Scotland, Scottish Borders, Cardrona. A public footbridge crossing over the Kirk Burn in the forest of Cardrona.

Scotland, Scottish Borders, Tweed Valley. The River Tweed near the small village of Walkerburn in the Tweed Valley.

Scotland, Scottish Borders, Coldstream. Looking across the River Tweed, the natural border between England and Scotland.

Scotland, Scottish Borders, Coldstream. Breaking light illuminates a tree and reeds on the banks of the River Tweed, against a backdrop of an indigo sky.

Scotland, Scottish Borders, Coldstream. The town houses and monuments of Coldstream, located on the banks of the River Tweed.

Scotland, Scottish Borders, Coldstream. The River Tweed dominates the landscape near Coldstream, the self proclaimed first true border ‘toon’.

Scotland, Scottish Borders, Hermitage Castle. Hermitage water running in front of the Hermitage Castle. The castle has a somewhat colourful history with numerous stories of war, treason and murder being associated with the property. It was built in an area considered to be a key element in the English and Scottish wars for control over the Liddesdale and the border area.

Vietnam, Northern Vietnam, Sapa. Cat Cat Falls, a waterfall in Cat Cat village near Sapa.

Vietnam, Northern Vietnam, Sapa. Cat Cat Falls, a waterfall in Cat Cat village near Sapa.

Vietnam, Northern Vietnam, Sapa. Cat Cat Falls, a waterfall in Cat Cat village near Sapa.

Vietnam, Northern Vietnam, Sapa. Cat Cat Falls, a waterfall in Cat Cat village near Sapa.

Vietnam, Northern Vietnam, Sapa. Cat Cat Falls, a waterfall in Cat Cat village near Sapa.

Laos, Ban Na Hin, Waterfall. Downstream of a waterfall as it cascades through native jungle and bush.

Laos, Ban Na Hin, Waterfall. Shafts of light pass through vegetation hanging to the rock face near a waterfall.

New Zealand, Canterbury, Arthur's Pass National Park. Creek running into the Poulter River and the Poulter Valley.

New Zealand, Canterbury, Arthur's Pass National Park. Creek running into the Poulter River and the Poulter Valley.

New Zealand, Canterbury, Arthur's Pass National Park. Creek running into the Poulter River and the Poulter Valley.

New Zealand, Southland, Fiordland National Park. The Hidden Falls cascade, found along the route of the Hollyford Track.

New Zealand, Southland, Fiordland National Park. The Hidden Falls cascade, found along the route of the Hollyford Track.

Scotland, Dumfries & Galloway, Grey Mare's Tail. The Grey Mares Tail waterfall, a popular tourist attraction managed by the National Trust for Scotland.

Scotland, Scottish Borders, The River Ettrick. A stone bridge over the fast flowing River Ettrick.

Scotland, Scottish Borders, The River Ettrick. A stone bridge over the fast flowing River Ettrick.

France, Rhône-Alpes, The Ecrins National Park. The la Romanche River flowing through a gorge in the mountains near La Grave.

France, Rhône-Alpes, The Ecrins National Park. The la Romanche River flowing through a gorge in the mountains near La Grave.

France, Rhône-Alpes, The Ecrins National Park. The fast rapids of the la Romanche river running near the Plan De Valfourone in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. The fast rapids of the la Romanche river running near the Plan De Valfourone in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. The fast rapids of the la Romanche river running near the Plan De Valfourone in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. The fast rapids of the la Romanche river running near the Plan De Valfourone in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. The fast rapids of the la Romanche river running near the Plan De Valfourone in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. Mountain stream running near the La Plan de l'Alpe in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. Mountain stream running near the La Plan de l'Alpe in the Ecrins National Park.

France, Rhône-Alpes, The Ecrins National Park. Mountain stream (Torrent de l'Abergue) running through a wild mountain landscape located near the village of La Grave and the Chal Vachere

France, Rhône-Alpes, The Ecrins National Park. Mountain stream (Torrent de l'Abergue) running through a wild mountain landscape located near the village of La Grave and the Chal Vachere

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

England, Northumberland, Northumberland National Park. A winter scene with the remains of snow on the river Breamish, running through the Cheviots and the Breamish valley near the village of Ingram situated within the Northumberland National Park in the northen england county of Northumberland about 8km east of the border with Scotland.

Switzerland Valais Val Ferret. A sream running through a dramatic mountain landscape near the village of La Fouly

Switzerland Valais Val Ferret. A stream running through a dramatic mountain landscape near the village of La Fouly

Switzerland, Valais, Val d Arpette. A mountains stream running downstream from a glacier.

Switzerland Valais Val d Arpette A small stream and weir in woodland in the Val d arpette running to the Lac de Champex

Switzerland Valais Val d Arpette A small stream flowing through woodland in the Val d arpette running to the Lac de Champex