Scotland, Scottish Highlands, Cairngorms National Park. View from the Pools of Dee Southwards down the Lairig Ghru looking towards Cairn Toul and the Devils Point

New Zealand, Otago, Mt Aspiring National Park. The Blue Pools of Haast Pass.

Bolivia, Southern Altiplano, Termas de Polques. Stream coloured by minerals near the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Stream coloured by minerals near the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Stream coloured by minerals near the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Stream coloured by minerals near the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Stream coloured by minerals near the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Warning sign near a stream coloured by minerals at the Termas de Polques otherwise known as the Hot Pools.

Bolivia, Southern Altiplano, Termas de Polques. Warning sign near a stream coloured by minerals at the Termas de Polques otherwise known as the Hot Pools.

England Tyne and Wear, Whitley Bay. Rocks and tidal pools on the sands of the Whitley Bay sea front.