Laurie Campbell / Outfall from hydroelectric Laggan Dam, Lochaber, Scotland, UK, February

Philippe Clement / Grande Dixence Dam holding back Lac des Dix, Switzerland, July 2009

Philippe Clement / Mountain flowers in front of the Grande Dixence Dam which holds back the lake Lac des Dix, Switzerland, July 2009

Philippe Clement / Chapel in front of the Grande Dixence Dam holding back the lake Lac des Dix, Switzerland, July 2009

Philippe Clement / Tourists walking towards the dam, forming the Lac de Moiry, Valais, Switzerland, July 2009

Onne van der Wal / Water dam, South Island, New Zealand.