Pascal Tordeux / Lone Maple (Acer) in a field against cumulo-nimbus and mammatus clouds. Picardy, France, May.
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Ashley Cooper / Cumulo Nimbus cloud and rainbow seen from an aeroplane window over the Argentinian coast. Argentina. February 2014
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Ashley Cooper / Cumulo Nimbus cloud seen from an aeroplane window over Argentina. February 2014
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Ashley Cooper / Cumulo Nimbus cloud seen from an airplane window over Argentina. February 2014
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Mark Taylor / Panoramic view of rocky outcrop and cumulo-nimbus clouds across the state of Utah, USA
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Nick Upton / Viper's bugloss (Echium vulgare) flowering on karst limestone mountain scree slope at 1550m in the Julian Alps with Cumulo nimbus clouds forming above 2864m Mount Triglav in the background, Triglav Na...
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Nick Upton / Blue sky and cumulo nimbus storm clouds building at dawn. Mecklenberg-Vorpommern, Germany.
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Aflo / Y-3204 Cumulonimbus clouds in blue sky
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Larry Michael / Cumulo nimbus cloud formation, USA
