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Ice cave by Einar Runar Sigurdsson<br />
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Despite its stunning icy interior, temperatures in this ethereal cave are actually higher than outside.<br />
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Photographer Einar Runar Sigurdsson was warmed by the sun's rays, which crept into the cave on one of Europe's biggest glaciers, while he even lit a fire inside.<br />
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Meanwhile, with temperatures above freezing he was able to take pictures of a cascading waterfall.<br />
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Icicles in the caves ranged in size, with Mr Sigurdsson snapping one icicle measuring 1.5 metres (4ft 9ins) long.<br />
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© Einar Runar Sigurdsson/Solent News & Photo Agency<br />
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