Scotland, Scottish Highlands, Cairngorms National Park. The Devil's Point and the River Dee, on the south side of the Lairig Ghru.

Scotland, Scottish Highlands, Cairngorms National Park. The Devil's Point and the River Dee, on the south side of the Lairig Ghru.

Scotland, Scottish Highlands, Cairngorms National Park. The River Dee and Cairn Toul, on the southern side of the Lairig Ghru.

New Zealand, Canterbury, Arthur's Pass National Park. Detail view of a boulder in the river bed of the Bealey River.

New Zealand, Canterbury, Arthur's Pass National Park. Bealey River flowing through the Bealey Valley.

Argentina, Patagonia, Los Glaciares National Park. Early morning scene of a dry riverbed by the Poincenot campsite, below the Fitz Roy range.

Argentina, Patagonia, Los Glaciares National Park. Early morning scene of a dry riverbed by the Poincenot campsite, below the Fitz Roy range.

France, Rhône-Alpes, Le Bourg d Oisans. Worn car, lorry and tractor tyres are recycled to provide flood protection on the river bed near the Bourg d Oisans

France, Rhône-Alpes, Le Bourg d Oisans. Worn car, lorry and tractor tyres are recycled to provide flood protection on the river bed near the Bourg d Oisans

ENGLAND, Yorkshire, Yorkshire Dales National Park. The flowing waters and dry limestone river bed of the river Dee.

ENGLAND, Yorkshire, Yorkshire Dales National Park. The flowing waters and dry limestone river bed of the river Dee.

ENGLAND, Yorkshire, Yorkshire Dales National Park. The flowing waters and dry limestone river bed of the river Dee.

ENGLAND, Yorkshire, Yorkshire Dales National Park. The flowing waters and dry limestone river bed of the river Dee.